A Scottish government plan to charge UK students outside Scotland full tuition while providing a free education to Scotland-based students prompts accusations of inequality and discrimination.
Five forms of new technology that can change the world: From the computer that beats humans on "Jeopardy!" to cellphone apps for African pick-and-hoe farmers, to satellites that spy on human rights abusers.
When small is big: Tinier chips demand less energy and could produce a cellphone that needs a battery charge only once a month.
8.9 earthquake: There have been no reports of radiation leaks from any of Japan's nuclear plants in the wake of the devastating earthquake. But two reactors are in danger of core melt, say experts.
Moderate Islamist leader Rachid Ghannouchi returned to Tunisia from exile Sunday, insisting that he's a democratic Islamist leader and that he will not run for office.
Graphene, a super-strong, transparent form of carbon one atom thick, could be used in displays, solar panels, and lightweight composites. Two Russian-born scientists found a way to isolate it, winning the 2010 physics Nobel Prize.