Elizabeth Howell

A spectacular rock arch in Utah is safe from collapse for now, according to a study that used a new technique to listen to the arch's natural "hum" to measure its internal health.

Researchers recently visited two parks in Utah to monitor the health of some of the state's iconic natural arches.

Here are some misconceptions about Mars that just won't die.

The annual Perseid meteor shower is typically the most spectacular "shooting star" display for people in the Northern Hemisphere, and this week, skywatchers could be in for a remarkable show.

Beijing has seen explosive growth in recent years, with the physical size of the city quadrupling in just a decade, a new study reveals.

Even 4.67 billion miles (7.5 billion km) away from Earth, the New Horizons mission at Pluto could help scientists learn more about planet Earth.

One-third of Earth's largest groundwater basins are under threat because humans are draining so much water from them, according to two new studies.

Slinky snake robots could get a better grip when climbing, thanks to new research on how a seahorse's tail works, according to a new study.

The U.S. Fish and Wildlife Service (FWS) is planning to remove the eastern cougar from the endangered species list after determining the subspecies has likely been extinct for 70 years.

Tropical Storm Bill lurks menacingly near the coast of Texas in a photo taken from space yesterday (June 15).

Severe floods in Texas and Oklahoma are causing devastation after multiple storm systems battered a formerly drought-stricken area, according to experts.

A huge, 10-engine drone dubbed "Greased Lightning" successfully completed a series of flight tests recently, paving the way for new types of unmanned vehicles that could one day carry people.

A British warplane that was shot down in 1940 during World War II and was later meticulously restored to flying condition is slated to hit the auction block this summer.

The Hubble Space Telescope is celebrating its 25th anniversary. Here are some of the most amazing photos taken by the iconic observatory.

A wide swath of the central United States is at risk of thunderstorms and possible tornadoes over the next couple of days, according to the National Weather Service (NWS).

A laser weapon made by Lockheed Martin can stop a small truck dead in its tracks from more than a mile (1.6 kilometers) away, the company announced this week.

The rocket-powered Bloodhound car will race across the Kalahari Desert later this year, in hopes of breaking the world land speed record.

The first-ever soft landing of a robotic probe the surface of a comet has just been named the top scientific breakthrough of 2014 by the journal Science.