Global warming makes California drought worse

A new study suggests that natural forces are behind California’s drought, but that global warming has contributed 8-27% to the drought’s severity.

Amazing views of Saturn’s icy moon Dione

The Cassini spacecraft made its final flyby of Saturn's moon Dione last week. Check out the spacecraft's final breathtaking close views.

July 2015 was warmest month ever recorded

Last month's average global temperature was the all-time highest monthly temperature since record-keeping began in 1880.

No asteroid threatening Earth in September

Despite rumors, no asteroid threatens Earth. All known Potentially Hazardous Asteroids have less than a 0.01% chance of hitting Earth in the next 100 years, says NASA.

Why do volcanoes erupt?

Volcanoes are channels that transfer molten rock from Earth’s crust to the surface. Here’s why eruptions happen.

View from space: Fires in US Pacific Northwest

Wildfire outbreaks have charred nearly 7 million acres this summer. Satellite view of several fires burning in Idaho, Oregon, and Washington.

Space weather threatens equatorial regions too

Damaging electric currents in space affect Earth's equatorial region, not just the poles, according to new research.

Large 2015 Gulf of Mexico dead zone

Data from this year’s survey indicate that the dead zone in the Gulf of Mexico is above average in size, likely because of heavy rains in June.

Astronomers find teeny supermassive black hole

In a dwarf galaxy 340 million light years away, astronomers have found the smallest black hole ever observed in the center of a galaxy.

Cassini’s last close flyby of Saturn moon Dione today

The Cassini spacecraft will zip past Saturn's moon Dione on Monday, August 17 . It will be the spacecraft's final close flyby of this icy satellite.