How a Solar-Powered Water Wheel Can Clean 50,000 Pounds of Trash Per Day From Baltimore's Inner Harbor
A large wheel has been strolling the Baltimore Inner Harbor the past month, doing its best to clean the trash that has littered a city landmark and tourist attraction.
It's called the Inner Harbor Water Wheel, and though it moves slow, it has the capability to collect 50,000 pounds of trash. The timing for John Kellett's solar-powered creation is crucial—hands and crab nets simply can't keep up with the growing amount of wrappers, cigarette butts, bottles and other debris carried from storm drains into the harbor.
"It looks sort of like a cross between a spaceship and a covered wagon and an old mill," says Kellett told NPR. "It's pretty unique in its look, but it's also doing a really good job getting this trash out of the water."
The wheel has become an integral part of the Healthy Harbor Waterfront Partnership Initiative. It receives power from the Jones Falls river's current near the harbor, which turns the wheel and lifts trash from the water into a dumpster barge. A solar panel array keeps it running when there water current isn't enough.
The wheel is now docked to the harbor. Each it runs, it removes an impressive amount of debris. So far, it has never collected less than eight cubic yards of trash.
Healthy Harbor hopes to make the body of water swimmable in less than six years, and the Water Wheel could be a big part of that.
"The water wheel has been a time-saver for us," said Bill Flohr, who runs Baltimore Harbor's East Marina. "It seems to be collecting probably 95 percent of what we normally had to pick up by hand."
Looks like you'll have to trust your map if you want to find the newly designated Katahdin Woods and Waters National Monument in Maine.
By Steve Horn
After taking heat last fall for destroying sacred sites of the Standing Rock Sioux Tribe, the owner of the Dakota Access pipeline finds itself embattled anew over the preservation of historic sites, this time in Ohio.
The plan provides billions in subsidies for renewable energy, bans the construction of new nuclear plants and decommissions Switzerland's five aging reactors. There is no clear date when the plants will close.
By Alex Kirby
An ambitious scientific expedition is due to start work on May 22 on Bolivia's second-highest mountain, Illimani. The researchers plan to drill three ice cores from the Illimani glacier, and to store two of them in Antarctica as the start of the world's first ice archive.
Although not on most people's radar here, New York is one step closer to becoming the first state to have genetically modified, non-sterile insects released outside without cages.
The viral video of a young girl snatched off a Richmond, British Columbia dock by a sea lion is another reminder that people shouldn't get too close to wild animals.
Port officials in Canada have sharply criticized the family for putting themselves at risk for feeding the large animal, especially since there are several signs in the area warning people not to do so.
Flooding breached a supposedly impregnable Arctic "doomsday" vault containing a collection of seeds stored for an apocalypse scenario last week, after warmer-than-average temperatures caused a layer of permafrost to thaw.