A new study shows that if ions are kept cool, then the information they hold can be repeatedly manipulated.

Barack Obama has proven to be an impresario at selling new policies — and at selling himself as the best man to implement them. On the stump a year ago he promised a no-nonsense, let’s-fix-this approach to the nation’s mounting social and economic ills. His campaign pledges ranged from making health care insurance universally affordable to fixing schools to assuring that tax credits supporting industrial research and development wouldn’t expire. And, particularly encouraging to scientists, Obama pledged that research agencies would receive better funding based on smarter criteria. Cli... (p. 24)

Scientists sift through genetic data sets to better map twisting branches in the tree of life.

Better equations could improve MRI quality, or even bring quantum computing closer.