The Water-Gate creates a flood barrier when the waters rise.

ENVIRONMENT
The tropical flora could one day be a common sight at higher latitudes.
They'll be softer, too, but still not painless if you step on one.
The state's invasive species population is out of control.
Cutting-edge tools that will help us understand the most unexplored regions on Earth are the focus of a new exhibition at the American Museum of Natural History.
A new study found that breakfast sandwiches have a bigger carbon footprint than other between-the-bread options.
If you're spending all of your time at home with Netflix, you probably aren't driving too much.
The Atlanta-based team behind the Squirrel Census wants people to know more about their bushy-tailed neighbors.
The formations that give the park its name could vanish as soon as 13 years from now.
Sites where bombs were detonated contain less TNT than sites where they were deactivated.
Trees provide shelter, shade, beauty, clean air—and, sometimes, pure entertainment. These 40 trees all have something special about them.
Larger homes can earn up to $200 a year.