The Sun has unleashed two eruptions that could disturb Earth's magnetic field and bring auroras to parts of the world. Here's ...

A study in Nature finds plants have been absorbing 31 percent more carbon dioxide from the atmosphere than previously assumed ...

A look at how 5,000 facts may help explain the universe.

Life beyond Earth's atmosphere demands extreme physical, biological, and psychological adaptations that rarely make the ...

Science has solved extraordinary problems, yet some long-standing questions remain unsettled even with modern tools and technology.