'Sand' Piles Up Atop Earth's Core By Richard A. KerrNov. 20, 2000 Rising dregs may link the fluid core to its rocky shell
Weather Contest Is More Than Hot Air By Constance HoldenNov. 14, 2000 Winner of long-term forecast gets glory--and $50,000
Agreement to Shrink Dead Zone By Dan FerberOct. 12, 2000 Billion-dollar plan focuses on Mississippi River drainage
Iron Tonic Greens Up the Ocean By Richard A. KerrOct. 11, 2000 Blooming ocean supports role for biology in ice age cycles
Marine Research Dives Into the Unknown By David MalakoffOct. 4, 2000 10-year plan advises exploration of unplumbed depths
Does CO2 Make the Ice Move? By Richard A. KerrSep. 18, 2000 Study suggests that carbon dioxide, not ice sheets, drives the ice ages
Extinction Hit by Land and by Sea By Richard A. KerrSep. 8, 2000 New evidence tallies the toll of the Permian-Triassic extinction on plant life
Homegrown Quartz Muddies the Water By Erik StokstadAug. 30, 2000 Clues to ancient environment may have been misinterpreted
Big Source of Smog Sniffed Out By Robert F. ServiceAug. 21, 2000 Cows took the blame for ammonia, but cars are the bigger culprits
Bay Area Breathes a Little Easier By Mark SincellAug. 18, 2000 "Big one" along Hayward fault is less likely than scientists assumed
Volcanologists Killed in Blast By Richard A. KerrAug. 17, 2000 Tragedy in Indonesia highlights need for following safety precautions
New Greenhouse Gas Discovered By John S. MacNeilJul. 27, 2000 Rare human-made molecule traps heat with extreme efficiency
Ocean Science Urged to Go Deep By David MalakoffJul. 26, 2000 National Academy panel backs sea-floor observatories
Atmosphere Drives Earth's Tipsiness By Richard A. KerrJul. 25, 2000 Mysterious wobble is a product of air pushing the ocean around
Ocean Floor Wobbles Atop Fluid Layer By Dana MackenzieJul. 17, 2000 Unstable silt could cause landslides, tidal waves