Pres. Obama's Inauguration signals major shift in energy, environment, etc.; Methane found on Mars – evidence of life?; Bird strike downs plane into Hudson River; Kepler satellite to find earth-twins; Invisibility breakthrough.
Credits:
Special guest for 100th anniversary of Evolution: Dr. Neil Shubin, author of Your Inner Fish: A Journey Into the 3.5 Billion Year History of the Human Body.