Add Yahoo as a preferred source to see more of our stories on Google. Venus could make a brief appearance this weekend as it passes between the Earth and the sun. Just be warned: It won't be easy to ...

A strip of cool water stretches west from South America along the equator, helping set the pace for some of the planet’s most important weather swings. That Pacific “cold tongue” helps steer the El ...

At the start of the year, Earth will quietly reach a milestone in its orbit around the sun. Known as perihelion, this is the moment when our planet is closer to the sun than at any other point in the ...