News
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EarthLake Retreat: African river valley once hosted big lake
The valley of the White Nile in Africa may long ago have held a shallow lake that sprawled 70 kilometers across and stretched more than 500 km along the river.
By Sid Perkins -
ChemistryThe March of History: Terra-cotta warriors show their true colors
As archaeologists continue to excavate the famous Chinese terra-cotta warriors, a new restoration technique could preserve the figures' paint coats, which normally peel off when exposed to the elements.
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Health & MedicineFetal Risk: Inflammation in womb tied to cerebral palsy
For a pregnant woman carrying a baby to term, inflammation in the womb nearly quadruples the chance her baby will be born with cerebral palsy.