March 7, 2012 - Dr. Neil deGrasse Tyson speaking at the US Senate Commerce, Science and Transportation hearing on Priorities, Plans and Progress of the Nation's Space Program.

Plutonium powered robot car! With a laser gun! That's (kind of) what's hurtling through space right now as part of NASA Mars Science Laboratory heads for the Red Planet. Hank walks you through this historic mission, with the help of some kick ass animations (thanks NASA!). Mars Science Laboratory www.nasa.gov marsprogram.jpl.nasa.gov Follow SciShow on twitter: www.twitter.com Like SciShow on Facebook: www.facebook.com Credits: Produced by Hank Green Chief Editor: Blake de Pastino Cinematographer: Nick Jenkins Video Editor: Matt Ferguson Graphics: Amber Bushnell Written by Dave Loos TAGS: scishow, sci show, mars science laboratory, curiosity, curiosity rover, mars, nasa, jpl, hank green, vlogbrothers, sky crane, spirit, opportunity, mls, frickin, excited, lasers, space

Hank tells us about some developments that are being made in the dramatic area of laser tractor beams. Like SciShow on Facebook: www.facebook.com Follow SciShow on Twitter: www.twitter.com References for this episode can be found in the Google document here: bit.ly scishow, NASA, darth vader, tractor beam, lazer, optical tweezer, photon, light, particle, freeze, push, pull, solenoid beam, electromagnetic field, polarity, goddard space flight center, space junk, discovery, science, physics, hank green

Here's what polish AGH University of Science and Technology do in their free time. My another useless device - Imperial March played by two floppy disk drives. Homepage: silent.org.pl Post in English: silent.org.pl Po polsku: silent.org.pl Read the note about the next video: silent.org.pl

Happy New Year to all my subscribers! This addresses a response to my video "Climate Change -- Hurricanes, atolls and corals," which, on investigation, revealed a major error by a news agency and a TV network. The moral of the story is that sticking the label "Global Warming" onto anything that moves is not going to help public understanding of climate science. SOURCES: "Rising Water threatens Panama islands" -- Al Jazeera www.youtube.com "Rising sea drives Panama islanders to mainland" by Sean Mattson, Reuters July 12, 2010 www.reuters.com Map of Caribbean tectonics from: "Wide Plate Margin Deformation, Southern Central America and Northwestern South America" R. Trenkamp et al. estrella.geol.sc.edu Paper showing influence of subsidence on tidal guages: "Changing coastal levels of South America and the Caribbean region from tide-gauge records" - DG Aubreya et al, 1988 Map showing isostatic uplift of Britain: www.neccap.org

Professor Moriarty enthuses over a recently published paper. Our thanks to the authors, especially Sebastian Loth, for permission to reproduce their images. Enthusiastic explanation by Professor Philip Moriarty from the University of Nottingham. Visit our website at www.sixtysymbols.com We're on Facebook at www.facebook.com And Twitter at twitter.com Sixty Symbols videos by Brady Haran Brady's other channels include: www.youtube.com (Chemistry stuff) www.youtube.com (Numbers and maths) www.youtube.com (Space stuff) www.youtube.com (Science and behind the scenes) www.youtube.com (Food science) www.youtube.com (Big science facilities) www.youtube.com (Favourite scientists) www.youtube.com (Academic look at the Bible) www.youtube.com (Modern language and culture)

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It's Hanko de Mayo! We all know Hank loves the James Webb Space Telescope, so hopefully he'll like our gift. In addition to his gift, nerdfighteria is celebrating Hank's birthday by letting our elected officials know that Increasing Awesome through scientific exploration is important to us. You'll find the email I wrote my congressperson and senators below. You can copy it, amend it, or write your own. Here's how: AMERICANS: Find your congressional representative here: www.house.gov And your senators here: www.senate.gov Click through to their contact pages to email them. NON-AMERICANS: I do not know how to email your representatives, but I do know that it is possible in every democratic country, and since the James Webb Space Telescope is a collaboration among many nations, it's likely that your government is involved. So let them know how much space exploration and science funding matter to you! Here's my letter: Dear Congressman Carson, My name is John Green. I'm a voter in your district, and I'm contacting you to ask that you work to increase federal government support for NASA and other scientific initiatives. NASA projects like the James Webb Space Telescope offer us the opportunity to understand the very beginning of our universe. For centuries, government-backed scientific programs have improved the lives of every person on the planet, and they are a gift to every person who will live after us. It's vital that the United States lead the world in increasing awesome ...