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Environment9040 articles archived since 1845

Costly Interlopers

Costly Interlopers

Introduced species of animals, plants and microbes cost the U.S. $123 billion a year

February 15, 1999 — Alan Hall
Attack of the Fire Ants

Attack of the Fire Ants

The insect has spread, maiming animals and shifting the ecological balance

February 15, 1999 — Alden M. Hayashi
Noah's Flood?

Noah's Flood?

February 15, 1999 — Philip Morrison and Phylis Morrison
Not Cleaning Up

Not Cleaning Up

Faster, cheaper ways to restore polluted ground are largely shunned

February 15, 1999 — W. Wayt Gibbs
Not Just Flash

Not Just Flash

Satellite data reveal how lightning influences climate

January 4, 1999 — Alan Hall
Hello, La Ni¿a

Hello, La Ni¿a

"The area of below normal sea surface temperatures continues to expand in the central equatorial Pacific, marking the demise of the 1997/1998 El Ni¿o episode and the further evolution of La Ni¿a (Cold episode) conditions. If current trends continue, La Ni¿a conditions can be expected by late Northern Hemisphere summer to early fall."

December 14, 1998 — Alan Hall
Light Twisters

Light Twisters

Photonic crystals promise advances in communications and optical computers

September 21, 1998 — Alan Hall