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Hikers and hunters have long relied on horses, mules and llamas to carry gear on long backcountry trips. Now, many are getting into goats. Many say they're superior, but critics see risks to wildlife.

Sea stars along the Pacific Coast are dying in the largest disease epidemic ever documented in a wild marine species. New research suggests warmer water is making the disease even more deadly.

In their new book Compassionomics, two doctors review the field of compassion research. Their finding? When physicians take time to connect and express care, both patients and doctors benefit.

San Diego researchers are making progress on a long-running plan to revive a nearly extinct rhino species. Two rhino births this year were important steps.

Michael Honeycutt, the top toxicologist for Texas, is the latest chair of the EPA's science advisory board. But some scientists warn his views align more with industry than with scientific consensus.

A prominent scientist and cancer researcher at the Salk Institute for Biological Studies in La Jolla has been suspended over apparent sexual misconduct allegations.

A Trump appointee who was a vocal advocate for "energy dominance" will now work with an oil company pitching a major project on Alaska's North Slope.

A squirrel wondering if it's safe enough to forage for food apparently listens for the reassuring chatter of nearby birds, a study finds.

A high-dose, prescription fish oil pill has been shown to reduce the risk of heart attacks and strokes. An FDA advisory panel voted in favor of expanded use of the drug.

From engineering to economics, from painting to planetary science, the range of this year's class is vast. But the MacArthur Foundation expects them all to do big things with their newfound $625,000.