Earth Science

The seven largest countries in the world account for nearly half of the world's land area, but one is far larger than the rest. Do you know what the largest country is?

By Jesslyn Shields

Zulu Time is a shorthand for describing a time that is the same no matter where you are in the world. So, how does that work?

By Alia Hoyt

If you think the largest desert in the world is hot and sandy, think again. These 10 deserts spanning the globe are massive, but they're not all sunbaked.

By Mitch Ryan

It's known as the "Gateway to Hell" and while it might not actually get you there, what it will unleash if it keeps thawing could truly be hellish.

By Patrick J. Kiger

What's the difference between moissanite and diamonds? And which of these brilliant stones wins out when it comes to the engagement ring competition?

By Mitch Ryan

Arizona isn't all desert. Take Grand Falls, aka "Chocolate Falls." It is dry most of the year, but when it rains, this waterfall pours.

By Patty Rasmussen

It was the world's largest diamond when mined and today it's cut into nine gems that are all part of the British Crown Jewels. But since the death of Queen Elizabeth II, questions have emerged about its imperialist history.

By Dave Roos

Scientists are concerned that the Thwaites Glacier is melting at a rapid pace, though some don't love the name "Doomsday Glacier." What does the rapid melt of this huge glacier mean for the future of our planet?

By Mark Mancini

When it comes to rivers, longest doesn't necessarily mean biggest, and length can be difficult to determine, so the top spot will always be debated.

By Jesslyn Shields

Climate change may be melting glaciers, but it's also reducing the oxygen of the world's oceans. Without oxygen, many marine organisms may no longer be able to survive.

By John Perritano

Talk about a Brexit! Scientists have clues to catastrophic flooding that destroyed a land bridge that once connected England and France.

By Patrick J. Kiger

Most mammals have a penis bone called a baculum, but humans don't. A new study sheds light on the history of the baculum, and why ours is missing.

By Jesslyn Shields

Science has determined that disappearing completely into quicksand isn't possible — but that doesn't mean that getting stuck still won't kill you.

By Patrick J. Kiger

Surprisingly, living in a city with a high level of natural radiation doesn't have any ill effects.

By Alia Hoyt

Underwater icicles, also called brinicles or sea stalactites, form when super-cold brine meets normal seawater. The sub-zero phenomenon can kill some sea life.

By Patrick J. Kiger

The formidable gusher could stop flowing for a few months in 2019 in order to repair some bridges in dire need.

By Rachel Pendergrass