StarTalk Radio

This week’s show is bursting with conspiracy theories and strange hypotheses, but that doesn’t stop your own personal astrophysicist Neil deGrasse Tyson from dropping some serious science. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Join guest host planetary scientist Dr. David Grinspoon and comic co-host Leighann Lord as they answer your questions about Venus while Neil’s off working on COSMOS. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Red pill or blue pill? You get both when Neil deGrasse Tyson interviews Morpheus himself, actor Laurence Fishburne, about his roles in The Matrix films, CSI, Searching for Bobby Fischer and more. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Stay Tuned for… Science! Neil deGrasse Tyson and comic co-host Eugene Mirman answer more of your questions about science in Star Trek, Star Wars, Sliders, Superman, Contact, Mary Poppins and more. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Join guest host Bill Nye the Science Guy, Eugene Mirman and NASA astronaut Mike Massimino as they have a blast answering your questions while Neil’s off working on COSMOS. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

In this Cosmic Queries episode, Neil deGrasse Tyson gets all wibbly-wobbly, timey-wimey as he answers fan questions about time travel with Colin Jost, Saturday Night Live’s new Weekend Update anchor. Image courtesy of Wikimedia Commons, Credit: aussiegall from Sydney, Australia. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Since they didn’t blow up Neil’s office in Part 1, the MythBusters Adam Savage and Jamie Hyneman are back to finish the job. Up for discussion: busted urban legends, Archimedes, Bigfoot and more. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

The MythBusters are in the house. In Part 1, Neil deGrasse Tyson sits down with Adam Savage and Jamie Hyneman to discuss experiments, physics, urban legends and more. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Neil deGrasse Tyson and Chuck Nice tackle an eclectic mix of your questions that take us from the boiling surface of the Sun to the dark side of the moon and Earth’s distant past to the last moments of the universe. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Neil deGrasse Tyson has a one-on-one conversation with… God. It’s an episode filled with divine revelations about everything, from the fossil record and evolution to the Big Bang and string theory. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Neil deGrasse Tyson and Eugene Mirman are back to answer more of your sci-fi questions about Aliens, The Black Hole, Prometheus, Superman, Star Trek, Iron Man, Futurama, Gilligan’s Island and more. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Book passage to the final frontier with Neil deGrasse Tyson and co-host Leighann Lord. Learn about space elevators, get tourism tips for Mars, and find out how not to vomit in your spacesuit. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Explore the intersection of art and science when astrophysicist Neil deGrasse Tyson and co-host Chuck Nice discuss van Gogh’s The Starry Night, Escher, da Vinci, Giotto, computer generated art and more. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Neil deGrasse Tyson, your own personal astrophysicist, answers your questions about dark matter, black holes, light, time, relativity and the fabric of our universe in your favorite Cosmic Queries episodes of Season 4. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Join your cosmic tour guide, astrophysicist Neil deGrasse Tyson, as we explore the most memorable moments from your favorite episodes in Season 4, our most popular season ever. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Science Fiction meets science fact as Neil deGrasse Tyson and Eugene Mirman explore time travel, warp drive, force fields, transporter beams, parallel universes and Dyson spheres. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Neil deGrasse Tyson and Honeybee Robotics’ Stephen Gorevan focus on robots here on Earth, from steam pipe repairing robotic inchworms and Predator drones to Asimov’s Three Laws of Robotics and the practicality of cyborgs. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

From Mars to Europa, the human exploration of space is increasingly robotic. Laugh and learn about our mechanical marvels from Neil deGrasse Tyson, Eugene Mirman and their special guests at StarTalk Live. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

How scientifically accurate was the movie, Gravity? Neil deGrasse Tyson and Chuck Nice answer your questions with a little help from NASA astronaut Mike Massimino. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

“Keep Looking Up” has a different meaning when Neil deGrasse Tyson and Eugene Mirman turn a speculative, scientific eye towards Unidentified Flying Objects. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Neil deGrasse Tyson’s interview with Dan Aykroyd concludes with a scientific discussion about ghosts, aliens, and cars on “a mission from God” with a little help from astrophysicist Chuck Liu. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Neil deGrasse Tyson chats with Dan Aykroyd on topics as varied as the science of humor, Earth’s molten core and the birth of the Blues, with a little help from Chuck Nice and astrophysicist Charles Liu. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Join Neil deGrasse Tyson and comic co-host Leighann Lord as they explore the dark mysteries of our cosmos, from black holes and neutron stars to dark flow and the Higgs field. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

It’s a different kind of StarTalk as Neil deGrasse Tyson interviews Joe Rogan, host of The Joe Rogan Experience, about everything from science and sports to evolution and Kim Kardashian. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

What challenges await humanity on our journey into space, and will we be up to the task? Explore the dangers of space with astrophysicist Neil deGrasse Tyson and comic co-host Chuck Nice. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Join the crew of StarTalk Live – Commander Neil deGrasse Tyson, Co-Pilot Eugene Mirman Buzz Aldrin, John Oliver and Andrew Chaikin – as they conclude their exploratory mission to Town Hall. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Join Commander Neil deGrasse Tyson, Co-Pilot Eugene Mirman and crew members Buzz Aldrin, John Oliver and Andrew Chaikin on StarTalk Live’s mission to explore Town Hall in NYC. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

The Sun is the star of the show as astrophysicist Neil deGrasse Tyson and comic co-host Chuck Nice answer fan questions in this solar edition of Cosmic Queries. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

The Science of Sex comes to its inevitable climax when Neil deGrasse Tyson, Kristen Schaal and Charles Liu discuss human, primate and alien sexuality with Dr. Ruth Westheimer and Mary Roach. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

StarTalk Radio trades the cosmic for the orgasmic when Neil deGrasse Tyson and Kristen Schaal discuss the science of sex with Dr. Ruth Westheimer and Mary Roach. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Infectious disease expert Laurie Garrett is back with Neil deGrasse Tyson to answer your questions about deadly viruses and current epidemics like H7N9 influenza and MERS-CoV. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Dark matter is the longest unsolved problem in astrophysics. Find out what we know – and what we don’t – from your own personal astrophysicist, Neil deGrasse Tyson. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

The role of science in hip hop culture is the theme that runs through the conclusion of Neil deGrasse Tyson’s interview with rapper GZA, with hip hop expert Prof. Chris Emdin. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Your ideas about rap music may change when Neil deGrasse Tyson and comic co-host Chuck Nice “spit verses” with rapper GZA of the Wu-Tang Clan and hip hop expert Dr. Christopher Emdin. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

StarTalk Radio comes down to Earth as astrophysicist Neil deGrasse Tyson and comic co-host Chuck Nice answer fan questions about our home planet, from how it formed to how it might end. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

The climate heats up in the Bell House when Neil deGrasse Tyson and the StarTalk Live crew, including Questlove and Dr. Adam Sobel, look at the causes, politics and science of climate change. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

It's a perfect storm of science and comedy when Neil deGrasse Tyson and StarTalk Live surge into the Bell House the night before Winter Storm Nemo to discuss hurricanes and superstorms. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Tune in for the most eclectic Cosmic Queries ever, when astrophysicist Neil deGrasse Tyson answers fan questions about everything from quasars and dead astronauts to Doctor Who and missions to Mars. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Join us for another episode of Cosmic Queries, where astrophysicist Neil deGrasse Tyson answers fan questions about light, energy and the universe as fast as comic co-host Leighann Lord can ask them. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

The Zombie Apocalypse rages on as Neil deGrasse Tyson hunts for the truth with World War Z author Max Brooks and Pulitzer Prize winning journalist and virus expert Laurie Garrett. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

There’s no escaping the Zombie Apocalypse when Neil deGrasse Tyson interviews Max Brooks, author of World War Z and the world’s leading “authority” on these nonexistent killers. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

How much do politics, economics, competition and fear impact NASA? Find out when Neil deGrasse Tyson and Prof. John Logsdon discuss the space program, from the Cold War to the present day. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Why did the US really go into space? Why did the Apollo program end early? Find out when Neil deGrasse Tyson digs into the history of space exploration with Prof. John Logsdon. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Can’t tell the difference between asteroids, comets, meteoroids, meteors and meteorites? Never fear… Neil deGrasse Tyson explains them all in this episode of Cosmic Queries. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Take off for an asteroid with Neil deGrasse Tyson and Peter Diamandis, the co-founder of Planetary Resources and the man with the plan to mine asteroids for profit and progress. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Part 2 of Neil deGrasse Tyson’s interview with chef Anthony Bourdain is all about cooking and eating, from molecular cooking to food safety to the new “Nose to Tail” movement. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

How can a dish be fit for a king in one country and for the garbage in another? Find out when Neil deGrasse Tyson sits down with world traveler, author and chef Anthony Bourdain. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Join us for an out-of-this-world episode of Cosmic Queries when astrophysicist Neil deGrasse Tyson provides down-to-earth answers to fan questions about aliens. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

Neil deGrasse Tyson’s interview with Alan Rickman concludes with a discussion of “the mysterious mechanism of acting and theatre and storytelling” and the use of special effects in the Harry Potter movies. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

In Part 1, Neil deGrasse Tyson chats with Alan Rickman about the craft of acting, the problems with the education system, and how he chooses and prepares for roles. Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early.Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.