Dorothy Cotton never publicly spoke about her intimate relationship with King. But no woman – not even King's wife – was closer to the civil rights icon during the last years of his life.

Trump says he plans to announce 'major' new sanctions on Iran in response to the attack on a US drone. A peace studies scholar explains why sanctions rarely work.

US lawmakers and regulators are beginning to investigate big tech's growing power, but they need to look beyond size and into their very natures.

In the US, poverty is measured by income level. But that measure misses many other aspects of poverty -- like unemployment, poor health and a lack of health insurance.

Geophysicists use sound waves to build a picture of the magma and rock beneath this active volcano, most of which is underwater. It's like CT scanning the Earth.

There are many conversations these days around 'successful dying.' Two African American scholars argue why these conversations need to include race and how it impacts life span.

With fear of a diagnosis of Alzheimer's a constant concern for many seniors, they turn to supplements. A recent study suggests they'd be better off keeping their money.

Two experts ask whether dads are making their health a priority. Evidence suggests not. Pressures to provide income often hold fathers back.

Even the tidiest space has some dust. Researchers are investigating just what these indoor particles are made of and their possible implications for human health.