Exposure to toxic chemicals, especially flame retardants and pesticides resulted in more than a million cases of intellectual disability in the US between 2001 and 2016, research finds.

Politicians with an education in economics spur economies to grow faster than leaders without one, research shows.

A new way to produce perovskite solar cells using inorganic ingredients limits their defects and lets them last for months.

A new tool can spot contamination from coal fly ash. "Our hope is that this new tracer...will help us provide greater protection to communities at risk."

Children exposed to lead may have a harder time getting a good night's sleep, a new study suggests.

"Young children are extremely vulnerable to lead poisoning because of their normal crawling, hand-to-mouth, exploratory behavior."

Bangladesh is one of the world's top growers of turmeric, but new research ties lead in turmeric produced in the country to serious health issues.

A new study that followed first-year college students until they were in their 40s shows that narcissism tends to decline as we age.

Manganese isn't particularly toxic, but it can cause significant—potentially dangerous—changes in the water in lead pipes.

Can "Minecraft" and other online communities "breed more savvy defenders of democracy"? New research suggests they can.