Oysters also filter water -- a lot of water. Scientists estimate that each oyster filters 50 gallons of water each day. That equates to about a bathtub's worth of water filtered by each oyster each day!

All signs point to the fact that President Obama should prioritize protecting the Arctic as part of his climate legacy.

Why this violent return to barbaric policies that eradicated wolves from the lower 48 states and destroyed the balance of healthy ecosystems?

Sadly, 35 of 200+ sites designated as natural World Heritage properties are considered in danger and face threats such as pollution, human armed conflict, poaching, uncontrolled urbanization, and unchecked tourism and development.

I have learned that life is a complex play of cells, some that are around when you're young, some when you're old, but that all, regardless of species, are parts of one organism expanding and contracting in space and time.

There's something about smaller scale hydro power that gets the imagination going.

Congress's failure to act on global climate change was one of the reasons the diplomatic atmosphere was so chilly last year in Copenhagen. Now, Congress has chilled the atmosphere again.

Special from National Geographic by Edward O. Wilson, photographs by David Liittschwager "When you thrust a shovel into the soil or tear off a piece ...

Although the foreign mining partnership claims that it will "respect all of Alaska's natural resources," the stakes are too great to roll the dice.

Rich or poor, from the most advanced to the most primal, all citizens of the world and their governments must make lifestyle changes to clean up the planet.