Throughout an election campaign, US voters are bombarded with images of the two candidates - speaking from podiums, greeting rally crowds and stepping down aircraft stairs. Here's a different ...

The new images reveal the shockwaves generated by these stellar eruptions, which began with an explosive star collapse that was visible to astronomers on Earth nearly 1,000 years ago. Peering deep ...

System to pick US president created in 1787, when the South found a way to inflate its numbers and political influence.

Most women will have their first mammogram at age 40 to 50, and this can serve as a good baseline from which to compare your images in the future. Women with breast cancer risk factors may start ...