Whale researchers are keeping close watch on an endangered orca that has spent the past week carrying and keeping her dead calf afloat in Pacific Northwest waters

Microbes in soil release more carbon into the air, worsening climate change

The first calf born in three years to the endangered orcas that spend time in Pacific Northwest waters has died

Scientists say they've detected water beneath the surface of Mars, raising the possibility of life on that planet

The European Union's top court has ruled that a series of new biotechnology breeding techniques should fall under the EU's GMO rules of safety checks and labeling, even if some exemptions may apply

A Milwaukee County jail supervisor who ordered the water turned off in a cell leading to the dehydration death of a mentally ill inmate is headed to trial

A Liberian woman who probably caught Ebola during the 2014 West Africa outbreak may have infected three members of her family a year after she first fell sick

A man who was perhaps the foremost expert on the iconic monarch butterfly has passed away

AP-NORC Poll: Curiosity about ancestry is the main reason Americans seek DNA testing but many also want to know if they're at risk for disease

An invasive species of plant in Vermont left an Essex woman with severe burns and blisters