A detail from The Trek Through Time, a 16-plaque diorama at the U.S. Geological Survey’s headquarters in Reston, Va. This ...

Get regular eye exams to catch macular degeneration early. If you notice vision is blurred or distorted, tell your eye doctor right away. People over age 50 should have eye exams every two years and ...

A grapefruit-sized dinosaur egg from a fossil bed in China gave paleontologists a huge surprise. Rather than a dinosaur embryo or sediment, it was filled with sparkling crystals of calcite lining the ...

As the countdown to midnight begins, some of the nation’s biggest retailers are also winding down the workday early. Shoppers hoping to squeeze in last-minute purchases will need to plan ahead as ...