Toxins on poison dart frog skin mold the skin's microbial community, boosting species variety and potentially even feeding some daredevil bacteria.

Experts say clinical obesity is more than a high BMI and instead is a disease in which excess body fat harms tissues, organs or doing daily activities.

When fed peanuts, red squirrels in Britain developed weaker bites — showing that food supplements to threatened animals could have unintended side effects.

United by Fire lays out key insights from the two largest blazes in Colorado history, the Cameron Peak and East Troublesome fires of 2020.

Amid doubts over a common decongestant, evidence suggests the placebo effect can still help people suffering from a cold.

After decades of study, scientists sound genuinely optimistic about the possibility of detecting primordial black holes, which might explain dark matter.

Engineers have all the technology they need to make flying cars, but there are still some barriers to getting these sci-fi mainstays off the ground.

Theresa Betancourt has studied Sierra Leone’s former child soldiers. Her new book Shadows into Light tells their stories.

Baby Boomers may drive a drastic increase in dementia cases in coming decades, but there are steps people can take to reduce their risk.

In some parts of California, fire season is now year-round due to rising heat and little rain. High winds and dry conditions are fueling L.A.’s infernos.

A new U.S. Surgeon General's report describes the link between drinking alcohol and developing cancer. Many Americans aren’t aware of the risk.

Deformed scales in hatchlings and biomarkers indicative of disease progression are two health impacts on turtles at PFAS-polluted sites in Australia.