The trigger is usually water. Excessive rainfall can trigger landslides and mudslides because it’s heavy and adds extra weight to the land.

Glaciers in Alaska are losing ice and contributing to sea level rise. To monitor these changes, a team of researchers has been flying scientific instruments on a bright red, single-engine plane since spring 2009.

According to NOAA data, global growth in atmospheric carbon dioxide (CO2) in 2018 was the 4th-highest in 60 years of record-keeping.

Devon Island in the Arctic is one of Earth's most Mars-like places. NASA is there, training scientists and testing technologies for future Mars exploration. Now Google has joined in, to bring Devon Island's Mars-like wonders to you.

Across North America, coyotes are moving into urban environments. While human residents are having to get used to the new animal neighbors, coyotes are also habituating to people.

A new study suggests that reductions in water use for agriculture might be the best bet for avoiding future water shortages in the U.S.

Roboticists are fundamentally rethinking their craft. Particle robots don't look like biological creatures, but they're constructed like biological systems, vast in complexity and abilities, yet composed of simple parts. Are they a step toward the proverbial 'gray goo'?

Are we alone? If advanced alien civilizations are out there, why haven't we heard from them? Scientists call this Fermi's Paradox - aka The Great Silence - and they gathered in Paris to discuss it.

A new theory says that the ever-slowing speed at which our brain processes images as we get older speeds up our perception of time.

Aspen trees - fondly called Quakies by some - have trembling, quivering leaves. Now those leaves have inspired an energy-harvesting mechanism that might rescue dust-laden rovers on Mars.