Einstein's theory was confirmed in 1919, when British astronomer Sir Arthur Eddington measured the bending of starlight around the sun during a total solar eclipse. And it's been re-confirmed since. How about now?
Glaciers in Alaska are losing ice and contributing to sea level rise. To monitor these changes, a team of researchers has been flying scientific instruments on a bright red, single-engine plane since spring 2009.
Devon Island in the Arctic is one of Earth's most Mars-like places. NASA is there, training scientists and testing technologies for future Mars exploration. Now Google has joined in, to bring Devon Island's Mars-like wonders to you.
Across North America, coyotes are moving into urban environments. While human residents are having to get used to the new animal neighbors, coyotes are also habituating to people.