Leader's departure marks end of an era for Coastal Commission

The California Coastal Commission is losing the leader who has guided it for a generation, casting uncertainty over the direction of the...

Bounty at Lake Powell follows record dry stretch

Reporting from Page, Ariz.

Scientists find early traces of wood structure in plants

The oldest traces of simple wood have been identified in small fossil plants dating from the early Devonian period, about 400 million...

Altruistic wasps? More like plain self-interest

Social insects may not love their fellow bugs as much as once believed.

Falcons, hawk ward off gulls and pigeons at Santa Monica complex

Swooping low over the office courtyard's pond, the lone gull was watching like a hawk.

Los Angeles' trash and recycling policies for apartments debated

Empty soda bottle? Blue bin. Small wood box? Black bin. Magazine? Blue again. It's become part of life for millions of L.A. residents to...

Plesiosaurs carried young like a mammal, study finds

Plesiosaurs — giant marine reptiles that ruled the oceans 75 million years ago — gave birth to single large babies and may...

New NASA moon rocket could cost $38 billion

The rocket and capsule that NASA is proposing to return astronauts to the moon would fly just twice in the next 10 years and cost as much as...

Falcon hypersonic vehicle test flight fails

A test flight of an experimental aircraft traveling at 20 times the speed of sound ended prematurely Thursday morning when the arrowhead-...

'Huge' results raise hope for cancer breakthrough

In a potential breakthrough in cancer research, scientists at the University of Pennsylvania have genetically engineered patients' T cells...

Pregnant California women show high levels of flame retardant

Pregnant California women have registered some of the highest levels of the toxic flame retardant PBDE in their bodies ever recorded...

2nd blast draws scrutiny to alternative-energy firms

The scenes were oddly similar.

First fuel-efficiency and greenhouse-gas emissions standards for trucks announced

President Obama announced the first fuel-efficiency and greenhouse gas standards for long-haul rigs, work trucks and other heavy-duty...

Launching a new vision of the L.A. River

The long-awaited Paddle the Los Angeles River pilot program got off to a wobbly start Monday as two dozen civic leaders in hard hats and...

EPA set to miss deadline on ozone rules

The Obama administration, facing withering criticism from industry that environmental rules are behind the stalled economy, appears poised...