In this issue:
"World Changing Ideas": 10 innovations that are radical enough to alter our lives.
"Is Drug Research Trustworthy?": The pharmaceutical industry is undermining scientific research.
"The Winters of Our Discontent": Why scientists are expecting harsher winters in the U. S. and Europe.
"Four Starry Nights": Clues to the Milky Way’s evolution.
©2012 Scientific American