More than 3 billion years ago, Mars intermittently had liquid water on its surface. After the planet lost much of its atmosphere, however, surface water could no longer persist. The fate of Mars's ...

Across the street from the Flamingo Visitor Center at the foot of Florida's Everglades National Park, there was once a thriving mangrove population—part of the largest stand of mangroves in the ...

When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it appears? Or does the star merely look reddish, since its light has had to ...

My family, like many others, enjoys spending the weekends in play—including playing video games. For our four-year-old, creating choreography in Toca Dance and solving puzzles in Magic Light's ...

More than 100 million people in the U.S. will be in the path of an intense March storm starting Friday as the sprawling multi-day system threatens fires, blizzards, tornadoes, and flooding as it ...