Technology fellow at the Electronic Frontier Foundation Yan Zhu (@bcrypt) joins Matt and Andy to dig deep into online security, privacy, encryption, HTTPS Everywhere, podcast patent trolls, Privacy Badger, the Tor browser, the future of online ads, Edward Snowden, the Silk Road, the upcoming Probably Science live show at SF Sketchfest on January 14th and a bonus audio snippet about Yan's legendary landlord.

The hilarious Travis Clark (@thatguytravis) joins returning guests Dax Jordan (@daxjordan) and TJ Chambers (@tjchambersLA) to form the first episode with a Space Camp alumni majority and talk about Andy’s UFO sighting that *may* have been a Trident missile test, breaking the blood brain barrier, 24 as a 90s show, GPS versus sextants, DARYL and what it stands for, jet packs, rocket belts, wing things and personal helicopters, Norm at brunch, Dr. Dick’s blood, dementia and Dr. Demento and Margaret Thatcher on Yes Minister.

Danes and Brits come together this week in the form of Sofie Hagen (@SofieHagen) and Sarah Morgan (@sarahlmorgan), both lending their expertise to discussions on the Hollywood sign, Halloween, the emergency wizard costume, Danish science, rice pudding traditions, useful German words, being thrown free, a chimera twin baby, new ghosts, a new bat, spider bites, China’s space plans, eyesight, face blindness, the bacon cancer scare, Andy’s comedy doppelgänger, Danish TV, the hilarious Klown, WKD and crocodile eyes.

Hilarious actor/comedian Kerry Godliman (@KerryAGodliman) is stateside to film a new Christopher Guest film, and she chatted with Matt and Andy about science vs. art, cadaver fists, the persistence of the plague, embarrassing bodies, a clickbait generator, Doug Stanhope's feud with Matt and bee farmers.

Kelly Carlin wears a lot of hats as a monologist, actress, radio host, producer and author of her new memoir A Carlin Home Companion, and she invited Matt and Andy over to her place to talk about calculus, mind-body connections, right answers in math, whether snake fear is hard-wired, monkeys balls, Hurricane Patricia that may or may not be climate change-related, science and the Canadian election, the editor of the BMJ slamming David Hunt, magnetic brain control, the Gripsholm Lion, Ken M, the world's greatest troll, orange peels to clean up mercury, Marie Curie and Mabel Normand.

This episode is sponsored by Harrys.com - use the code PSP at checkout for $5 off your first order.

Author Johann Hari (@johannhari101) was stateside recently to return as a guest on Real Time with Bill Maher, and he invited Matt and Andy over to his hotel room to talk about the emotional deafness of the rich, his book Chasing The Scream and the failed 100-year war on drugs, the government's persecution of Billie Holliday, new theories of addiction, Rat Park, Portugal's radical policy changes and the way to sell America on drug decriminalization.

Comedy's Jacob Sirof (@jacobsirof) joins Matt and Andy to talk about new jobs, orgasm fungi, Star Wars science, Andy's nephews singing Weird Al, Wales and fake waves, a Chinese telescope on the moon, cheating Jews, converting vaccine skeptics and pig genes.

Dave Anthony (@daveanthony) of The Dollop, Walking The Room and Maron fame joins Matt and Andy to talk about navigating LA by satellite dishes, penis-at-twelve children in the Dominican Republic, mothers of boys gaining Y chromosomes, why we want to squeeze cute stuff, Rodney Stanger, the apparently kid, look at that horse, the mountain lion on a pole, the epidemic of Netflix documentaries like Cowspiracy, anti-burp compounds, fixing brain cancer with antidepressants and blood thinners, cannabis not causing schizophrenia, the hotel of the future, a double comet situation, 3D-printed hearts and dicks.

New Zealand's Tim Batt (@Tim_Batt) and Guy Montgomery (@guy_mont), hosts of The Worst Idea of All Time Podcast, join Matt and Andy to discuss Grown Ups 2, T-shirt cannon injuries, monkey selfies, urinal science and the best toilets in NZ, AIDS news, the AIDS Healthcare Foundation, the climate change “lawsuit”, a 1000-year-old treatment for styes that may generate new drugs, a new target for New Horizons, new Pluto pics, and the Apollo 13 stage show. To watch video of Probably Science, The Worst Idea of All Time and the other 30+ shows recorded live from LA PodFest, click here and use the code "science" to get $5 off of the video archive.

This week's episode was recorded live from the Audible Los Angeles Podcast Festival, with Andy Wood (@andytwood) and Matt Kirshen (@mattkirshen) welcoming original third host Brooks Wheelan (@brookswheelan), along with comedy legend Patton Oswalt (@pattonoswalt) and Caltech theoretical physicist/cosmologist Dr. Sean Carroll (@seanmcarroll). To support Probably Science and LA PodFest while getting a free 30-day trial and a free audiobook download, visit audible.com/lapodfest.