We're warning you now: This new video of Felix Baumgartner's record-setting leap from the edge of space just might make you feel a bit queasy. The supersonic skydiver made history in October 2012 when he plunged more than 24 miles to Earth's surface, breaking three records in the process.
In a step that has implications for stem cell research, human biology and the treatment of disease, researchers in Japan and at Harvard have managed to turn adult cells back into flexible stem cells without
Chris Hayes employed a lengthy metaphor when discussing the controversial Keystone pipeline on his Friday show, saying President Obama has been like an addict who knows he has a problem—in this case, with oil—but isn't taking the steps to do anything about it. Hayes urged Obama to reject the Keystone pipeline.