In this issue:
"12 Events that will Change Everything": Certain natural and man-made events could happen at any time, completely transforming societies.
"Alzheimer's: Forestalling the Darkness": New techniques that could help combat Alzheimer's Disease.
"Is Time an Illusion?": The concept of time and change may emerge from a universe that, at root, is utterly static.
"Washing Carbon Out of the Air": Machines could one day absorb carbon dioxide from the atmosphere, reducing global warming.
©2010 Scientific American