Scientists have discovered a new way to make molecular oxygen (O2) from carbon dioxide (CO2) -- no green plants involved.
Hello Mars! You're looking lovely this week!
Here's another reason to get your kids off the couch and make them run around instead: It will help them think better.
Some of the water molecules in your drinking glass were created more than 4.5 billion years ago, according to new research.
Don't underestimate the value of sitting around a campfire, listening to stories, singing songs and letting yourself stare mesmerized into the flickering flames. These activities may have played an essential role in early societies.
If the summer of 2014 felt unusually warm to you, you were right -- at least on a global level.