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Pilots and flight attendants in some countries are classified as "radiation workers" because of their extra exposure to cosmic rays. Scientists say these frequent fliers may face greater risks.

The Protestant cleric who bitterly opposed the IRA later forged an unlikely friendship with senior Sinn Fein leader Martin McGuinness.

Global food prices are at a four-year low because of good harvests in the U.S., Europe and China. But food still costs more than it did in the 1990s, even accounting for inflation.

Penn State alumna Mara Keisling is a transgender-identified woman and the founding executive director of the National Center for Transgender Equality. She…

Explaining science is something reporters, especially science reporters, must do. But most of us are not scientists. Instead, we rely on the type of…

Mythbusters co-host Adam Savage talks about three people who inspired him to be curious: his dad, a former Earth-science teacher, and physicist Richard Feynman.

Geneticist Wendy Chung describes what it's like to chip away at the mysteries of autism, and the excitement of uncovering tiny but critical clues.

Draw a planet (a circle, right?). Now draw a star (a pointy thing, yes?). Now ask yourself, aren't stars all round? Our sun is. So why do we make them pointy? Come learn the answer.

Americans have many questions — and misconceptions — about the deadly virus that's rapidly spreading in West Africa. We asked two scientists to explain more about how Ebola is transmitted.

He says he is seeking treatment for a tumor in his abdomen. His brother Doug Ford will run in his place. Earlier this year, Rob Ford took time off from his job to seek help for substance abuse.