A new paper calculated a solar storm could bring down the planet's satellite system in just three days, wreaking havoc on infrastructure.

The amount of carbon dioxide that humans will have released into the atmosphere by 2100 may be enough to trigger a sixth mass extinction, a new study suggests. The huge spike in CO2 levels over the ...

WASHINGTON — Earth has pushed past seven out of eight scientifically established safety limits and into “the danger zone,” not just for an overheating planet that's losing its natural areas, but for ...

The recent and much-ballyhooed "planetary parade" was an interesting celestial event that likely spurred even infrequent skywatchers to seek out the seven planets stretched out across the sky. Some of ...