Science & Medicine
[LESS INFO] 528 VIEWS | ADDED 15:10:00 09/30/11
Kevin Shea lives in a 70-foot in diameter, forest-green, geodesic dome. It is equipped with a solar array, a wind turbine, and a geothermal system. Shea makes biodiesel in a shed outback. His garden is constructed of 800 old tires. Take a tour of Shea's dome home.
[LESS INFO] 642 VIEWS | ADDED 15:10:00 09/16/11
New York is testing out a new water scrubber at one of its wastewater treatment plants in Queens. Meet the algal turf scrubber--two 350-foot slides covered in green algae. Water flows down the slides, algae grows naturally, and then cleans the water sent over it.
[LESS INFO] 506 VIEWS | ADDED 15:10:00 09/09/11
From death caps to puffballs, the fruiting bodies of fungi can be grouped into about a dozen major categories. Mycologist Roy Halling walks us through the wide world of mushrooms and takes us on a fungi foraging foray on the grounds of the New York Botanical Garden.
[LESS INFO] 633 VIEWS | ADDED 15:10:00 08/26/11
Water striders don't really stride, they row on the water. But their legs are spindly and don't seem good for paddling. To find out exactly how water striders propel themselves mechanical engineer David Hu, of Georgia Tech, filmed them rowing on food coloring and built his own robostrider.
[LESS INFO] 464 VIEWS | ADDED 15:10:00 08/19/11
Green builder Adam Katzman wanted to experiment with building a “constructed wetland” to process sewage. Then he wanted to make the whole thing float. His paddle-boat-toilet, parked at a marina in Queens, demonstrates how rainwater and human waste can be converted to plants and clean water. It’s a zero-waste waste disposal system.
[LESS INFO] 556 VIEWS | ADDED 15:10:00 08/12/11
Maxwell von Stein, a 22 year-old Cooper Union graduate, built a bicycle that uses a flywheel to store energy. Instead of braking, he can slow the bicycle by transferring the kinetic energy from back wheel into the flywheel--which spins between the bars of the frame. Then Max can send the flywheel energy back to the wheel when he wants a boost.
[LESS INFO] 630 VIEWS | ADDED 15:10:00 08/05/11
When marine biologist Roger Hanlon captured the first scene in this video he started screaming. He studies camouflage in cephalopods--squid, octopus and cuttlefish. They are masters of optical illusion and these are some of Hanlon's top video picks of the animals going in and out of hiding.
[LESS INFO] 459 VIEWS | ADDED 15:10:00 07/29/11
A rooftop farm in Brooklyn grows vegetables and doubles as a green roof, insulating the warehouse below. Green roofs save money on cooling and heating costs and also retain water, reducing the load on sewer systems. Annie Novak, head farmer and co-founder of Eagle Street Rooftop Farm gives us a tour.
[LESS INFO] 557 VIEWS | ADDED 15:10:00 07/22/11
Cilia--the little hairs that propel a paramecium--flap spontaneously, and will synchronize their movements with neighboring cilia. But exactly why they do this has been hard to pinpoint because cilia are complicated structures. So researchers fabricated knockoffs, with fewer components, to see if they could figure out what drives the waving.
[LESS INFO] 517 VIEWS | ADDED 15:10:00 07/15/11
Just Bulbs, on New York City's Upper East Side, sells just bulbs. There are 36,000 different kinds of lightbulbs in the store, says owner David Brooks. And although customers regularly rail about how compact fluorescent bulbs are ugly, Brooks argues that they've been unfairly maligned. They come in six color temperatures and a wide variety of shapes and sizes.
[LESS INFO] 415 VIEWS | ADDED 15:10:00 07/08/11
Malcolm Beck was farming organically in the 1950s, and that's how he got into compost. What started out as a little manure pile on his farm became a 40-acre compost-processing business five decades later. Beck sold his company, Garden Ville, but still works there and is constantly experimenting with different fertilizer formulas--from bat guano to earthworm tea.
[LESS INFO] 472 VIEWS | ADDED 15:10:00 07/01/11
Humpbacks whales blow bubbles around schools of fish to concentrate them for easier capture. Although this hunting technique, called bubble-net feeding, has been documented for decades, just how whales make the nets wasn't well-understood until now, says biologist David Wiley.
[LESS INFO] 629 VIEWS | ADDED 15:10:00 06/10/11
Build them the right home and cells will organize themselves into a tissue, says bioengineer Gordana Vunjak-Novakovic. We stopped by the lab to see a little piece of beating heart muscle they grew in the lab and keep in an incubator in the corner.