UV, X‑Rays and Biological Effects

How bright is the Earth from the moon? Neil deGrasse Tyson and Chuck Nice have fun with the sun’s reflectivity, discuss light pollution, and explore the electromagnetic light spectrum: how does sunscreen work?

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Thanks to our Patrons Nicholas Santiago, Bill Mccollough, Mizarare, Marcus Lanigan, Hrvoje Medarac, Geoff Skinner, Scooter, Odf12, Michele H, Thecasualtease, Alna Hofmeyr, Bev, Mitc…Nicholas Santiago, Bill Mccollough, Mizarare, Marcus Lanigan, Hrvoje Medarac, Geoff Skinner, Scooter, Odf12, Michele H, Thecasualtease, Alna Hofmeyr, Bev, Mitchell Abbott, Hades 1000, Allysia Wright, A Smith, Patrick Miller, Brian Parch, McBeardy, Blue, TamTam, Brendan Santangelo, Jonathan Collins, Nick Obrien, David Everett, Beautiful Universe, Vlad Condoroș, William T. Drummond III, Vision Novaa, Adam Martin, Courtney Lopotosky, Christopher Pickett, Tormonty, Abby Roberts, Claire Ture, Diego Kunke, Anatolii Okhotnikov, Tom Grissom, Korrey Allen, Simon, D Biswas, Sidlywinks, Gabriel Snell, Sonja Gardiner, John B, Mike Rivera, Duane Wolfe, Eva Carleton, Dan Hadaway, William Benedict, Zachary E, Muhammad Jawad Bashir, Jonathan Greenberg, Robert Hollis, Quinn McSperryn, Ross Kennedy, Kyle Brummet, Chadders, Erick Valdez, Jamie Haley, William Tyree, Sternritter, Yung Alien, Cosmicmoss, Kristopher Kapeel, David Bunting, Scotti Hinds, David Lott, JD Morales, Dan, DaleMorgansLife, Kelsey LeVert, Ethan Free, Johnathan Letcher, Misha Art, Tarsha Wynn, Periloux Peay, Jeremiah B Luther, Dee Programmer, Luis Santiago, Claude Jones Jr, Michael Rose, Robert Pennell, C.B. Winterton, Javier Alvarado, Toygar Ermin, John Cucetta, Uqbar, Alisha, Charles Loflin, Bobby Sue, Colton Upchurch, Michele Bollo, Michael Baker, William Crew, Charlie Mahoney, Seth Stinson, Brent Wiese, Vallous, Linda in Alameda, and Bzd for supporting us this week.

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