Environmental Science

To see a dinosaur these days, you can visit any number of museums or traveling exhibits. But you don't necessarily have to leave your yard either.

By Tracy V. Wilson

Hieroglyphics used to be a language that no one -- Egyptian or otherwise -- could decipher. With the help of the Rosetta Stone, that all changed.

By HowStuffWorks.com Contributors

Crews have to race to contain the damage from major oil spills to prevent damage to beaches, death to marine life and birds, and devastation to local wetlands. So how do they clean them up?

By Josh Clark & Sarah Gleim

It's evident the debate over climate change is a heated one. Are skeptics clouding the public judgment for money? Are climate-change believers merely alarmists who risk the present for the future?

By Josh Clark

The sea scorpion may have been the largest bug to ever live on the Earth, according to a recent find. Learn more about the giant sea scorpion.

By Josh Clark

On a planet that is 70 percent water, people don't have enough clean, safe water to drink. We're in a water crisis, and water rights are becoming a big issue. What happens if we just plain run out?

By Josh Clark

The Sierra Club lobbies for environmental preservation and engages members in fun wilderness excursions.

By Sarah Dowdey

Water is just hydrogen and oxygen, so why can't we do what nature does and combine the two? Unfortunately, it's not that simple, and the results can be rather ... explosive.

By Josh Clark & Jennifer Walker-Journey

In its purest form, it's odorless, nearly colorless and tasteless. It's in your body, the food you eat and the beverages you drink. All forms of life need it. What substance is more necessary to our existence than any other? Water.

By Shanna Freeman

What's as big as a continent and sitting in the middle of the Pacific Ocean? A pile of garbage that extends 100 feet (30 meters) below the surface of the water.

By Jacob Silverman

The 7 wonders of the natural world capture the imagination with their natural power and beauty. There is nothing that man can create that can match the beauty nature can create. Learn about all 7, including the great barrier reef.

By the Editors of Publications International, Ltd.

It used to take three years to get through the thick ice of the Northwest Passage. Now, you can sail from New York to Korea without hitting any ice at all. Where is all the ice going, and what are the ramifications of it melting 50 years too fast?

By Jacob Silverman

How do we reduce greenhouse gas emissions? A carbon tax is one answer. A simpler alternative to cap-and-trade schemes, a carbon tax encourages energy efficiency and reduced consumption.

By Sarah Dowdey

Carbon trading, sometimes called emissions trading, is a market-based tool to limit greenhouse gases. The carbon market trades emissions under cap-and-trade schemes or with credits that pay for or offset GHG reductions.

By Sarah Dowdey

Eco-conscious people purchase carbon offsets to help reduce worldwide greenhouse gas emissions. But do offsets actually help, and what does Pink Floyd have to do with them?

By Sarah Dowdey

Also known as "freak waves," these colossal walls of water have been alleged to be in the range of 100 feet or more. Learn what separates rogue waves from other large waves, what causes them and find out about some of the better-known rogue wave incidents.

By Ed Grabianowski

Recycling is a pretty simple concept: take something that isn't useful anymore and make it into something new. Learn about the process and the good and bad of recycling.

By Ed Grabianowski

While actual footprints measure size, weight and speed, carbon footprints measure how much carbon dioxide (CO2) we produce in our daily lives. Do you know how big your carbon footprint is?

By Sarah Dowdey

In an effort to detect areas with poor air quality, China is training people to sniff out harmful levels of pollution. But what effect does this have on the human body? Learn about how the brain identifies and distinguishes among scents as well as new odor-detecting technology.

By Josh Clark

The dead zone, caused by massive amounts of algae growth, is a vast area off the Gulf of Mexico that is deadly to marine life. How is human activity making the dead zone worse?

By Jacob Silverman

Clean coal -- isn't that an oxymoron? Not anymore. See how energy companies are using coal in cleaner ways to generate massive amounts of electricity. Alternative fuels may be making headway, but coal isn't used up yet. Find out why.

By Sarah Dowdey

Mount Everest dangers include an increase in development, tourism, and potential damage from global warming. Read about Mount Everest dangers.

By Jacob Silverman

Green roofs, long popular in Europe, are making their way into the United States. Find out what a green roof is and how it can solve some problems conventional roofs have.

By Sarah Dowdey

A lake in South America has disappeared and has left scientists wondering where all the water went to. Is it possible that a lake can abruptly vanish?

By Jacob Silverman

Vertical farming is a method of large-scale farming in an urban environment. Learn about the benefits of a vertical farm and vertical farming technology.

By Jacob Silverman