Mexico's alert system plays its part as quake strikes

Sirens wailed across Mexico City late Thursday warning its estimated 20 million population of a rapidly approaching quake from the Pacific, the latest use of its effective early warning system.

Tropical Storm Lidia leaves four dead in Mexico

Tropical Storm Lidia has left at least four people dead in its sweep across Mexico's Baja California peninsula, wrecking infrastructure and homes along the way, authorities said Friday.

NASA gives eastern Pacific Ocean's Hurricane Eugene 'eye exam'

NASA satellites gave the Eastern Pacific Ocean's Hurricane Eugene an "eye exam" as it studied the storm in infrared and visible light. NASA satellite imagery taken at different times showed Eugene's eye open and closed.

New tool may assist U.S. regional sea level planning

Thanks in large part to satellite measurements, scientists' skill in measuring how much sea levels are rising on a global scale - currently 0.13 inch (3.4 millimeters) per year - has improved dramatically over the past quarter ...

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