HowStuffWorks Show: Episode 4: Ocean Water
Water is everywhere, but not all is fresh water. Learn why the oceans become saltier as time passes and how machinery can get the salt out in this clip from the "HowStuffWorks" show on Discovery Channel.
Most Watched in Environmental Science
G Word: Glass Transformation
Watch as plate glass is recycled into the raw material used in fiberglass and countertops on Planet Green's "G Word."
Really Big Things: America's Landfills
Americans produce around 82,000 football fields full of trash. Much of it ends up in landfills. On Discovery Channel's series "Really Big Things," learn how landfills are layered with dirt and plastic, so the trash doesn't contaminate the earth..
Green Gadgets: THE KILL A WATT
There are electric vampires in your home that feed off your power. Learn how the Kill A Watt can stop the bleeding in this video from the Discovery Channel.
From the archives of Discovery: Pollution is a global problem. To learn more about pollution across the planet, check out this video.
How Water Works
There are over 300 million trillion gallons of water on earth. To learn more about water and it's amazing properties, check out this HowStuffWorks video.
Really Big Things: Generating Power
Steam power is an eco-friendly way to generate power. Watch how this process can create 138 Megawatts of electricity on Discovery Channel's "Really Big Things."
A biologist works on growing biofuel from plants to power vehicles. Check out this clip from the Science Channel's "Ecopolis" series to learn more.
100 Greatest Discoveries: Earth's Magnetic Field
Bernard Brunhes' study of volvanic eruptions led to the discovery of the Earth's magnetic field reversal. Learn more about Brunhes' findings on the Science Channel's "100 Greatest Discoveries."
Recent Videos in Environmental Science
Dirty Jobs: Chip Off the Block
Mike Rowe learns firsthand how grueling it is to cut out even a 5-inch-deep section -- featuring ancient bird tracks -- from a 4-ton boulder.
How PlantBottle packaging is Made
The new DASANI package featuring PlantBottle technology isn't your typical petroleum-based PET bottle. Up to 30% of the bottle's ingredients come from plants, and the bottle itself is 100% recyclable, just like an ordinary plastic bottle.
Is the world running out of oil?
Modern civilization depends on energy from fossil fuels. But in a world of increasing consumption and decreasing resources, how long will fossil fuel supplies last? Tune in and learn more about the debate over peak oil in this podcast.
World's Greenest Homes: The Grass Roof Bungalow
Outside of Minneapolis, sits a former 1940's bungalow like you have never seen. The deck is made from recycled milk jugs, there's grass on the roof and different types of solar panels saves this family around $800 a year on the electric bill.
World's Greenest Homes: Chicago House
A Chicago couple transforms a 3000 square foot warehouse into an eco chic, luxurious home. Watch this video from Planet Green's "World's Greenest Homes."
G Word: Tidal Power
Tech blogger Hank Green discusses how tides could possibly be used as an alternative energy source in this clip from Planet Green's "G Word."
G Word: Organic Spray Tan
In this clip from Planet Green's "G Word" the Keep It Green girls find a salon that performs organic spray tans.
G Word: Artificial Reefs
In this clip from Planet Green's "G Word," correspondent David Newsom highlights the loss of naturally occuring reefs and how artificial reefs can replenish habitats for marine life.
G Word: Ecoterrorism
In this clip from Planet Green's "G Word," environmental activist, Rod Coronado explains how he earned the nickname "ecoterrorist."
Stuff Happens: Don't Print That
Did you think about the environment before you printed out that last email? Watch as Bill tackles E-Waste and finds out what happens to all that paper in your office in this clip from Planet Green's "Stuff Happens" series.