More than 18,000 citizen-scientists in 96 countries submitted 4,591 observations of the darkness of their local night skies during the 10-day GLOBE at Night event last month. The GLOBE at Night Web ...

Satellite image of the Earth with the Atlantic Ocean in the centre. From space, the Earth looks like a sphere or a ball. About two thirds of the surface is covered with water, and the rest is covered ...

A 35-year-old Belmont woman has crossed the finish line in Sydney, Australia, to become the first American woman to run seven marathons on seven continents in seven days, according to race organizers.

I grew up as an avid atlas and encyclopedia reader, poring over the pages during those pre-digital days, immersed in the ...