Mining the Scrap Heap for Treasure
Across America, a network of scrap-metal firms is supplying much of the raw materials, iron to aluminum, that fuel the growing global economy
Unearthing Secrets Locked Deep Inside Each Fistful of Soil
To scientists at the National Soil Tilth Lab in Ames, Iowa, it’s not just dirt they are probing it’s the planet’s sustaining surface
A Few Miles of Land Arose From the Sea—and the World Changed
Panama is an event as well as a place. Smithsonian scientists are learning what it has meant for continental animal swapping, ice ages, et al.
However It Began on Earth, Life May Have Been Inevitable
In a universe filled with prebiotic compounds,it may be only a small step for some of them to hook up in ways that lead directly to life
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