Secretary of State Hillary Clinton called for tighter controls over tourism and other forms of pollution in Antarctica on Monday, arguing for greater global cooperation to help preserve the continent's environmental and scientific research value.
Heart Keeps Pumping Out New Cells
A study in the journal Science used changing carbon-14 levels--from nuclear bomb testing--to show that the adult human heart does continue to produce new muscle cells, albeit in small numbers.
Contracting Boom Could Fizzle Out
The recent surge in the Washington area's defense-contracting workforce would begin to ebb under Defense Secretary Robert M. Gates's latest budget proposal as the Pentagon moves to replace legions of private workers with full-time civil servants.
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