Archive: 08/8/2006

What's nature worth? New computer models tell all

Breath in. The air is free. But we'd all agree it's not worthless. So, what's the price tag on benefits provided by nature? In 1997, the University of Vermont's Robert Costanza and his co-authors put the answer at $33 trillion ...

Aug 08, 2006 4.3 / 5 (26) 0

A nursery for Hurricanes

Every hurricane season, about 100 low-pressure weather disturbances whirl westward out of West Africa and over the Atlantic Ocean, but less than one-fifth of them become tropical depressions, storms or hurricanes.

Aug 08, 2006 2.7 / 5 (3) 0