Mars Keeps Teasing Us — But Is There Really Life Out There? | Peter Girguis

The search for alien life is more chemistry than sci-fi.

From isotope fingerprints in Martian methane to ancient carbon trapped in zircon crystals on Earth, scientists are learning how to read the chemical breadcrumbs that life leaves behind. No green people, no catfish (yet). Just the quiet, meticulous science that could one day prove we’re not alone.

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Peter Girguis is a professor of Organismic and Evolutionary Biology at Harvard University. His research focuses on marine organisms, and how they adapt to extreme environments. He also works on developing novel technologies like deep sea autonomous laboratories and microbial fuel cells. Girguis appears in NOVA’s Ancient Earth series.

"Particles of Thought" is hosted by Hakeem Oluseyi, an astrophysicist, author, STEM educator, multi-patented inventor, science journalist, TV personality, science communicator, and inspirational speaker. His research is based on "hacking stars" to understand our universe better and develop innovative new technologies. Oluseyi's work has resulted in 11 patents and more than 100 publications covering contributions to astrophysics, cosmology, and plasma physics and the development of space missions, observatories, focal plane instruments, detectors, semiconductor manufacturing, and ion propulsion.

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