The Hitchhiking Microbe’s Guide to the Galaxy

I glow, therefore I am

Today on the show: a double feature — two mysteries in one episode. First, it seems like all living things emit a faint glow that disappears when they die. Then, is the International Space Station ... too clean? Guests: Daniel Oblak [https://profiles.ucalgary.ca/daniel-oblak], professor of physics at the University of Calgary; Rodolfo Antonio Salido Benítez [https://www.rodolfosalido.com/], scientist at SPT Labtech Links: Daniel's paper [https://pubs.acs.org/doi/10.1021/acs.jpclett.4c03546] with mouse and leaf images; Rodolfo's paper [https://www.cell.com/cell/fulltext/S0092-8674(25)00108-4] on the ISS For show transcripts, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://drive.google.com/drive/folders/1bMXuLuyy3zTLCnblKVWUBq4Gd84PY8sG]⁠vox.com/unxtranscripts⁠ [http://vox.com/unxtranscripts]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://drive.google.com/drive/folders/1bMXuLuyy3zTLCnblKVWUBq4Gd84PY8sG] For more, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/unexplainable]⁠vox.com/unexplainable⁠ [http://vox.com/unexplainable]⁠⁠⁠ [https://www.vox.com/unexplainable]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ And please email us! ⁠⁠⁠unexplainable@vox.com⁠⁠⁠ We read every email. Support Unexplainable (and get ad-free episodes) by becoming a Vox Member today: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/support-membership]⁠vox.com/members⁠ [http://vox.com/members]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/support-membership] Thank you! Learn more about your ad choices. Visit podcastchoices.com/adchoices [https://podcastchoices.com/adchoices]

Is everything inflammation?

To hear some people tell it — especially people on TikTok — inflammation is the root of all disease. It's... not that simple. But inflammation does have a lot to teach us about why modern life can make us feel so bad, and even what we might be able to do about it. Guest: Dylan Scott [https://www.vox.com/authors/dylan-scott], senior correspondent at Vox For show transcripts, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://drive.google.com/drive/folders/1bMXuLuyy3zTLCnblKVWUBq4Gd84PY8sG]⁠⁠⁠vox.com/unxtranscripts⁠⁠ [http://vox.com/unxtranscripts] ⁠⁠⁠⁠⁠ [http://vox.com/unxtranscripts]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://drive.google.com/drive/folders/1bMXuLuyy3zTLCnblKVWUBq4Gd84PY8sG]For more, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/unexplainable]⁠⁠⁠vox.com/unexplainable⁠⁠⁠ [http://vox.com/unexplainable]⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/unexplainable]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ And please email us! ⁠⁠⁠⁠⁠⁠unexplainable@vox.com⁠⁠⁠ [unexplainable@vox.com]⁠⁠⁠ We read every email. Support Unexplainable (and get ad-free episodes) by becoming a Vox Member today: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/support-membership]⁠⁠⁠vox.com/members⁠⁠⁠ [http://vox.com/members]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/support-membership] Thank you! Learn more about your ad choices. Visit podcastchoices.com/adchoices [https://podcastchoices.com/adchoices]

A show about nothing

A few months ago, we put out an episode about what silence sounds like, and it caught the attention of Rob Rosenthal, who hosts a podcast called Sound School about the craft of audio storytelling. So he called up host Noam Hassenfeld to ask him a question he couldn't stop thinking about: How do you make something that sounds like nothing? Host: Rob Rosenthal, host of Sound School Podcast [https://open.spotify.com/show/7lyYBChVximfpiinHyUaMP?si=511009257d3c4d67&nd=1&dlsi=12873c607fce4c63] Guest: Noam Hassenfeld For show transcripts, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://drive.google.com/drive/folders/1bMXuLuyy3zTLCnblKVWUBq4Gd84PY8sG]⁠vox.com/unxtranscripts⁠ [http://vox.com/unxtranscripts]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://drive.google.com/drive/folders/1bMXuLuyy3zTLCnblKVWUBq4Gd84PY8sG] For more, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/unexplainable]⁠vox.com/unexplainable⁠ [http://vox.com/unexplainable]⁠⁠⁠ [https://www.vox.com/unexplainable]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ And please email us! ⁠⁠⁠unexplainable@vox.com⁠⁠⁠ We read every email. Support Unexplainable (and get ad-free episodes) by becoming a Vox Member today: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/support-membership]⁠vox.com/members⁠ [http://vox.com/members]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/support-membership] Thank you! Learn more about your ad choices. Visit podcastchoices.com/adchoices [https://podcastchoices.com/adchoices]

The Hitchhiking Microbe’s Guide to the Galaxy

Can microbes travel through space on meteorites? It’s an idea called “lithopanspermia,” and to work out if it’s even feasible, some researchers decided to shoot microbes — with a gun. Guests: K.T. Ramesh [https://engineering.jhu.edu/faculty/kaliat-kt-ramesh/], professor of science and engineering at Johns Hopkins University; Lily Zhao [https://hemi.jhu.edu/rameshlab/node/18], mechanical engineer at Johns Hopkins University For show transcripts, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://drive.google.com/drive/folders/1bMXuLuyy3zTLCnblKVWUBq4Gd84PY8sG]⁠⁠vox.com/unxtranscripts⁠ [http://vox.com/unxtranscripts] ⁠⁠⁠ [http://vox.com/unxtranscripts]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://drive.google.com/drive/folders/1bMXuLuyy3zTLCnblKVWUBq4Gd84PY8sG]For more, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/unexplainable]⁠⁠vox.com/unexplainable⁠⁠ [http://vox.com/unexplainable]⁠⁠⁠⁠⁠ [https://www.vox.com/unexplainable]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ And please email us! ⁠⁠⁠⁠⁠unexplainable@vox.com⁠⁠ [unexplainable@vox.com]⁠⁠⁠ We read every email. Support Unexplainable (and get ad-free episodes) by becoming a Vox Member today: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/support-membership]⁠⁠vox.com/members⁠⁠ [http://vox.com/members]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/support-membership] Thank you! Learn more about your ad choices. Visit podcastchoices.com/adchoices [https://podcastchoices.com/adchoices]

Why did we go back to the moon?

For the first time in over 50 years, humans have gone to the moon and back. And this time, NASA says we're going to stay. NASA's planning for more missions, a permanent moon base, and even a mission to Mars. But there's a pretty big question hanging over all these dreams: Can humans survive in space long enough to make them happen? (A version of this episode originally aired in 2022, with the launch of Artemis I.) Guests: Anne McClain [https://www.nasa.gov/humans-in-space/astronauts/anne-c-mcclain/], NASA Astronaut; Scott Kelly [https://www.scottkelly.com/], former NASA Astronaut; Rebecca Boyle [https://rebeccaboyle.com/], science writer, Jonathan Jiang [https://science.jpl.nasa.gov/people/jonathan/], NASA astrophysicist For show transcripts, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://drive.google.com/drive/folders/1bMXuLuyy3zTLCnblKVWUBq4Gd84PY8sG]⁠vox.com/unxtranscripts⁠ [http://vox.com/unxtranscripts]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://drive.google.com/drive/folders/1bMXuLuyy3zTLCnblKVWUBq4Gd84PY8sG] For more, go to ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/unexplainable]⁠vox.com/unexplainable⁠ [http://vox.com/unexplainable]⁠⁠⁠ [https://www.vox.com/unexplainable]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ And please email us! ⁠⁠⁠unexplainable@vox.com⁠⁠⁠ We read every email. Support Unexplainable (and get ad-free episodes) by becoming a Vox Member today: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/support-membership]⁠vox.com/members⁠ [http://vox.com/members]⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ [https://www.vox.com/support-membership] Thank you! Learn more about your ad choices. Visit podcastchoices.com/adchoices [https://podcastchoices.com/adchoices]