Archive
2014
January
February
March
April
2013
January
February
March
April
May
June
July
August
September
October
November
December
2012
January
February
March
April
May
June
July
August
September
October
November
December
2011
January
February
March
April
May
June
July
August
September
October
November
December
2010
January
February
March
April
May
June
July
August
September
October
November
December
2009
January
February
March
April
May
June
July
August
September
October
November
December
2008
January
February
March
April
May
June
July
August
September
October
November
December
2007
January
February
March
April
May
June
July
August
September
October
November
December
2006
March
April
May
June
July
August
September
October
November
December
Apr. 22, 2013

Earth Day Mashup

by Julie Leibach

Click to enlarge images
Today marks the 23rd anniversary of Earth Day. Celebrate the globe with this SciFri sampler: 
 
There's artistry to creating the world, according to Rob Simmon, art director of NASA Earth Observatory. NASA's collection of Earth-from-space imagery dates back to the Apollo 8 mission, when astronauts snapped a picture of Earth rising over the moon. In this video from February 2012, Simmon and NASA scientist Gene Feldman explain how the modern "Blue Marble" images are made and how they relate to scientific study of the Earth.
 
 
Doug Wilson, a geophysicist at the University of California, Santa Barbara, explains in this 2011 video what we'd encounter if we drilled 6,000 meters below the seafloor to earth's mantle. The crust is made up of three layers—lava flows, sheeted dikes, and gabbro—all formed from magma that seeped up from the mantle.
 
 
Plus...
 
Cartoonist Neil Wagner shares a few Earth Day facts, and a celebratory cartoon, with SciFri here.
 
Finally, learn why Earth Day is also significant to SciFri's host, Ira Flatow.
About Julie Leibach

Julie is the managing editor of ScienceFriday.com. She is a huge fan of sleep and chocolate.

The views expressed are those of the author and are not necessarily those of Science Friday.

Science Friday® is produced by the Science Friday Initiative, a 501(c)(3) nonprofit organization.

Science Friday® and SciFri® are registered service marks of Science Friday, Inc. Site design by Pentagram; engineering by Mediapolis.

 

topics