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Position: Staff reporter

New study traces dinosaur evolution

Report traces how they evolved into birds

NASA rovers will test making oxygen on Mars

Tests planned to prepare for future missions

Nuisance floods rise along U.S. coasts

Global warming is the cause, researcher says

Again, heat is on: June is world’s hottest

WASHINGTON – The globe is on a hot streak, setting a heat record in June. That’s after the world broke a record in May. The National Oceanic and Atmospheric Administration announc...

Study says beef pollutes more than pork, poultry

Methane from cows is more potent than carbon dioxide

Newer gas wells are more likely to have leaks

Horizontally drilled wells give rise to more seeping methane

From billions to zero

When humans killed the passenger pigeon

Report: Oil rig problems remain

WASHINGTON – The key last-ditch safety device that failed to prevent the 2010 BP oil spill remains a potentially catastrophic problem today for some offshore drilling, according to a federal...

Species vanish faster than ever

WASHINGTON – Species of plants and animals are becoming extinct at least 1,000 times faster than they did before humans arrived on the scene, and the world is on the brink of a sixth great e...

Bee-colony death rate falls to 23%

Is it good news? Expert says ‘no’

Global warming worsens wildfires

Scientist: Fires in California, Arizona are ‘clear examples’

Climate report warns of disruption

Rising temperatures affecting Americans’ lives, study says