Science

Hospitals in some states have begun tracking the names of patients who show up repeatedly seeking opioids. Denying these patients pills saves hospitals money, but some doctors question the ethics.

Sound artist Honor Harger spent the last few years listening to the stars and recording some of the sounds of space.

That's what researchers found when they gave chimps a device that appeared to work like an oven. The findings add to the argument that our ancestors began cooking soon after learning to control fire.

The report says there are few incidents of tainted water given the number of wells. Energy companies agree. Environmentalists accuse the industry of undue influence over the study.

Drought-stricken Central Valley farmers are pointing fingers at the Sacramento Delta, where water still flows reliably. There's more pressure than ever to change a long-standing water rights system.

As consulting a doctor exclusively by phone, text or video becomes more popular, the Texas Medical Board moves to restrict these e-visits. Is the real battle over patient safety, money or turf?

Scientists say too much airborne nitrogen from farms is throwing off the ecological balance of Rocky Mountain National Park. So the federal government is hoping weather alerts for farmers will help.