A new study of Central African forest elephants has found their numbers down by 62 percent between 2002 and 2011. The study comes as governments and conservationists meet in Thailand to amend the Convention on International Trade in Endangered Species.
Now, to some alarming findings about wildlife in Africa. A 10-year survey looked at the population of forest elephants and found that it fell 62 percent in that time. The study is the largest of its kind, spanning five countries: Cameroon, Central African Republic, Democratic Republic of Congo, its neighbor the Republic of Congo and Gabon. The Wildlife Conservation Society, which helped organize the effort, is saying that extinction looms for the forest elephant because of poaching.
Federal stimulus money has helped cut the high cost of lithium-ion batteries, but not nearly enough to make electric cars affordable. Now there's an abundance of advanced battery manufacturers and not enough major companies to buy them. Many plants in the United States, South Korean, Japan and China that got government subsidies aren't producing many batteries, if at all. Three years ago Michigan's governor touted the state as the new battery capital of the world. There were five new advanced battery plants in the works, all of which were to get major tax breaks and some federal grants.
Lithium-ion batteries sparked a crisis for Boeing's Dreamliner 787 — but the crisis is not an unprecedented one. Four decades ago, a very similar transition to new battery technology in airplanes yielded similar problems. Audie Cornish describes what happened then — and what lessons might be learned as lithium-ion batteries become the next generation that power planes.
Originally published on Tue March 5, 2013 12:22 pm
Climate change will make commercial shipping possible from North America to Russia or Asia over the North Pole by the middle of the century, a new study says.
Two researchers at the University of California ran seven different climate models simulating two classes of vessels to see if they could make a relatively ice-free passage through the Arctic Ocean. In each case, the sea routes are sufficiently clear after 2049, they say.
People can get pretty addicted to computer games. By some estimates, residents of planet Earth spend 3 billion hours per week playing them. Now some scientists are hoping to make use of all that human capital and harness it for a good cause.
Right now I'm at the novice level of a game called EyeWire, trying to color in a nerve cell in a cartoon drawing of a slice of tissue. EyeWire is designed to solve a real science problem — it aims to chart the billions of nerve connections in the brain.
A mashup of innovation and old-school hacking (though none of the participants was bent on doing harm, we're assured), the goal of the competition was to improve the nation's health system and help people navigate the complexities of the Affordable Care Act.
A child born with HIV has been cured of the virus, researchers say. Audie Cornish talks to Richard Knox about what was different about this child among the millions who've been treated in the past and what it means for the prospect of an HIV cure in adults.