Legend has it that the rainforest of Mosquitia hid La Ciudad Blanca, the White City. For centuries, explorers tried to find the fabled city in the jungle of Nicaragua and Honduras. Protected by white water, coral snakes, stinging plants and brutal topography, the White City remained an archeologist dream. But with a new application of recent technology, a documentary filmmaker, not an archeologist, found the White City.
A cruise run by the Aquarium of the Pacific in Long Beach, Calif., sounds like a picturesque summer outing. But the Urban Ocean boat cruise highlights the juxtaposition of a powerful port with a fragile ecosystem: You're just as likely to see trash as you are to see marine life.
In front of the aquarium, school kids are running around, eager to go inside and pet the sharks and see the penguins. There's also a marina, where a small passenger boat called the Cristina shoves off from sunny Shoreline Aquatic Park.
It's a captivating story: A global rice-growing revolution that started with a Jesuit priest in Madagascar, far from any recognized center of agricultural innovation. Every so often, it surfaces in the popular media — most recently in The Guardian, which earlier this year described farmers in one corner of India hauling in gigantic rice harvests without resorting to pesticides or genetic modification.
The Earth's wettest regions are likely to get wetter while the most arid will get drier due to warming of the atmosphere caused by increased levels of carbon dioxide, according to a new NASA analysis of more than a dozen climate models.
This is SCIENCE FRIDAY. I'm Ira Flatow. Imagine stepping onto the Earth two billion years ago, taking a stroll along the shores of an ancient beach near the northern edge of what today is Lake Superior. You wouldn't see any trees. They didn't hit the scene until, oh, another billion-and-a-half years. What you might see, though, if you had a microscope, were tiny bacteria-like organisms on the shore having a ball eating each other.
Up next, another installment in the continuing quest to understand antimatter, that stuff that's supposed to be the opposite of matter. It's supposed to have been created during the Big Bang in equal amounts as normal matter, but for some reason, it's all disappeared. No one knows why - yeah, that stuff or actually that anti-stuff.
When the Great Storm of 1900 battered Galveston, Texas, the town simply lifted itself up--in some places as much as 17 feet. Could a similar approach save cities today? Randy Behm of the US Army Corps of Engineers and Dwayne Jones of the Galveston Historical Foundation talk about the costs and feasibility of raising a town, albeit with better technology than Galveston's hand-cranked jacks and mules.
This spring the massive "Brood II" batch of 17-year cicadas is expected to emerge from the ground in backyards and parks all along the Eastern U.S. The insects will mate, lay eggs, and start the cycle all over again. Cicada expert John Cooley explains the unusual biology and evolution of periodical cicadas.
Food writer Michael Pollan once advised "Eat food. Not too much. Mostly plants." Now, he tells us how to cook it. In his new book Cooked: A Natural History of Transformation, he takes a tour of the most time-tested cooking techniques, from southern whole-hog barbecue and slow-cooked ragus to sourdough baking and pickle making.
These robotic flies, which were built in a Harvard lab, can flap their wings independently of each other and fly around while tethered to a power and control wire.
Credit Kevin Ma, Pakpong Chirarattananon / AAAS/Science
An insect's eye lets it see really well because each of its light-sensitive cells has a dedicated lens. This miniature camera, which mimics an insect eye, is made from an array of microlenses arranged on a stretchable sheet that can be inflated like a balloon to a hemispherical shape.
Credit University of Illinois and Beckman Institute
A smartphone can tell you where to get a cup of coffee, but it can't go get the coffee for you. Engineers would like to build little machines that can do stuff. They would be useful for a lot more than coffee, if we could figure out how to make them work.
But the rules of mechanics change at small scales. Friction becomes dominant; turbulence can upend a small airplane.
For years, many marine biologists have argued that the floating, open-ocean net pens that produce billions of pounds of salmon per year also generate pollution, disease and parasites.
In some places in western Canada, the open-ocean salmon farming industry has been blamed for the collapse of wild salmon populations in the early 2000s — though other research has challenged that claim.