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Even after a Harvard team took into account differences in age and weight among ancient specimens and knees today, they found that modern humans tend to have more osteoarthritis.

Wildfires are still burning in western Greenland, close to the Arctic island's ice sheet. As the fires burn, they release black particles that can coat the ice and snow, and make it melt more quickly.

Republicans and the president on Charlottesville, on their bigger agenda. Can this political marriage be saved?

When a student complained that science textbooks were boring, teacher Tyler DeWitt got thinking about how he can make his lessons fun. DeWitt recounts his quest to make kids care about science.

The restaurant chain will close more than 130 locations this year. That's due to a drop in sales at franchises and a rebranding that left core customers feeling alienated and confused.

Immigrant rights groups and students gathered at the White House to protest the possible repeal of DACA, or Deferred Action for Childhood Arrivals.

Former state Supreme Court chief justice Roy Moore will face incumbent Sen. Luther Strange, who was endorsed by both Mitch McConnell and President Trump, in a September runoff.

Independence Blue Cross President and CEO Daniel Hilferty talks with Ailsa Chang about the Congressional Budget Office's latest report on payments the federal government makes to insurance companies.

Two college students in Florida found several spacesuits in a thrift store and bought them all for less than two dollars. The American Space Museum says they're authentic and worth thousands.

If you get in a car accident on a rural stretch of highway in Kansas, one volunteer firefighter says, you'd better hope it happens near a county with a well-equipped fire department.