Since the 1930s, Louisiana has lost roughly as much land as makes up the state of Delaware.
"If you put the state of Delaware between New Orleans and the ocean, we wouldn't need any levees at all," says John Barry, vice president of the Southeast Louisiana Flood Protection Authority-East. "There is this large buffer of land that has disappeared, and that buffer makes New Orleans much more vulnerable to hurricanes."
If you want to protect rare species, first you have to find them. In the past few years, biologists have developed a powerful new tool to do that. They've discovered that they can often find traces of animal DNA in streams, ponds — even oceans.
The idea took root just five years ago, when biologists in France found they could detect invasive American bullfrogs simply by sampling pond water and looking for an exact genetic match to the frogs' DNA.
When they come — and they are coming — will the robots we deploy into human culture be capable of evil? Well, perhaps "evil" is too strong a word. Will they be capable of inflicting harm on human beings in ways that go beyond their programing?
While this may seem like a question for the next installment of The Terminator franchise (or The Matrix or whatever, pick your favorite), it's a serious question in robotics and it's being taken up by researchers now.
Vermont, New Hampshire and Delaware get a notable benefit of being small: faster Internet connections. In the latest Akamai State of the Internet Report, they top the list of states with the fastest average connection speeds, and make the top 10 states with fastest peak connection speeds, too.
Check out the rankings, which include download speeds measured in megabits per second, and the year-on-year change for those numbers.
This week, NASA is trying to do its part to raise science literacy. To give people a better understanding of Earth's position in the solar system, the agency's posted a picture of our planet taken from a billion miles away, give or take 100 million miles or so. And joining me now to talk about the picture, and why NASA took it, is NPR's Joe Palca. Joe, good to see you.
The line to see the thing that was supposed to smell like rotting flesh wrapped around the U.S. Botanic Garden in Washington, D.C., on Monday night. Most folks who braved the heat and hourlong wait weren't greeted with the overwhelming stench of death, but rather the smell of sweat and intense, intense humidity.
Social media sites have gotten so difficult to ignore that millions of people are using apps to stop them from wasting time on the Internet. So if you lack self-control, no problem. Just download SelfControl — the app.
Switching gears now. We are about halfway through the Muslim holy month of Ramadan. That's where observant Muslims abstain from food, drink and intimacy during daylight hours and take special care to pray and reflect on their spirituality. If you are currently observing Ramadan, you might sometimes forget that it's time to pray or eat until you hear this coming out of your pocket.