NetCredit, an online lender, is featuring the butterfly as part of a public awareness campaign spotlighting the most endangered species in every state, complete with an artistic rendering.
Federal safety regulators are investigating whether employees and visitors were exposed to unsafe levels of radiation at a Grand Canyon National Park research building where uranium ore samples apparently sat around for years in unmarked buckets.
A climate scientist who popularized the term “global warming” has died. Wallace Smith Broecker was 87.
The Nature Conservancy closed on its latest acquisition Wednesday: a working, 900-acre cattle ranch at the headwaters of the Amargosa River that could one day become a living laboratory for the coexistence of conservation and commerce.
NASA’s Opportunity, the Mars rover that was built to operate just three months but kept going and going, was pronounced dead Wednesday, 15 years after it landed on the red planet.
Earth’s north magnetic pole has been drifting so fast in the last few decades that scientists say that past estimates are no longer accurate enough for precise navigation. On Monday, they released an update of where magnetic north really was, nearly a year ahead of schedule.