News tagged with delta

Climate and drought lessons from ancient Egypt

Ancient pollen and charcoal preserved in deeply buried sediments in Egypt's Nile Delta document the region's ancient droughts and fires, including a huge drought 4,200 years ago associated with the demise of Egypt's Old Kingdom, ...

dateAug 16, 2012 in Earth Sciences
shares0 comments 5

Gov't stands by as mercury taints water

(AP) -- Abandoned mercury mines throughout central California's rugged coastal mountains are polluting the state's major waterways, rendering fish unsafe to eat and risking the health of at least 100,000 impoverished people.

dateSep 18, 2009 in Environment
shares0 comments 1

Cosmology standard candle not so standard after all

(PhysOrg.com) -- Astronomers have turned up the first direct proof that "standard candles" used to illuminate the size of the universe, termed Cepheids, shrink in mass, making them not quite as standard as once thought. The ...

dateJan 12, 2011 in Astronomy
shares0 comments 43