World Bank Quits Coal in Kosovo, Renewables Cheaper
Correction: A previous version of this article ran the headline The World Banks Quits Coal. The article has been updated for accuracy to emphasize that the shift to renewables was driven by cost.
The power plant was the last coal project being considered for financing by the World Bank.
"We have made a very firm decision not to go forward with the coal power plant because we are required by our by-laws to go with the lowest cost option, and renewables have now come below the cost of coal," Kim said (skip to the 55:03 mark in this video). "So without question, we are not going to do that."
The remarks were made during the World Bank and the International Monetary Fund meetings in Bali, Indonesia.
The World Bank provides financial, advisory and technical support to developing countries. In December, the Washington-based lender announced at the One Planet climate summit it will "no longer finance upstream oil and gas, after 2019." The move was also aimed at helping countries meet their emissions reduction pledges made at the 2015 Paris climate talks.
One Planet Summit: World Bank to Stop Financing Oil, Gas Projects https://t.co/FQOqS9Oa9Y @BusinessGreen @GreenCollarGuy @Ethical_Corp— EcoWatch (@EcoWatch)1513205709.0
It is not clear how the government will proceed with the plant now that it no longer has the World Bank's backing, Reuters reported. Kosovo has the fifth largest lignite reserves in the world and most of its electricity is produced in two aging coal-fired plants.
The Sierra Club praised the bank's move. Lignite, also known as brown coal, is considered one of the dirtiest fossil fuels. The Sierra Club said in a press release that lignite coal is responsible for hundreds of premature deaths, tens of thousands of new cases of childhood respiratory diseases and costs millions in healthcare each year.
Developers have already proposed wind, solar and battery solutions that could provide the same amount of power at a lower cost and with less deadly pollution, the group added.
A January report from the International Renewable Energy Agency found that renewables have emerged as an increasingly competitive way to meet new power generation needs, and is expected to be consistently cheaper than fossil fuels in just a few years.
"This decision by the World Bank recognizes several key truths," John Coequyt, Sierra Club's global climate policy director, said in the press release. "First, the public doesn't want dirty coal. Second, coal is a bad investment, because clean energy is cheaper than coal in places all over the world. Third, if we want to curb the most catastrophic effects of the climate crisis, we have to move off coal immediately."
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The ghoulishly named ogre-faced spider can "hear" with its legs and use that ability to catch insects flying behind it, the study published in Current Biology Thursday concluded.
"Spiders are sensitive to airborne sound," Cornell professor emeritus Dr. Charles Walcott, who was not involved with the study, told the Cornell Chronicle. "That's the big message really."
The net-casting, ogre-faced spider (Deinopis spinosa) has a unique hunting strategy, as study coauthor Cornell University postdoctoral researcher Jay Stafstrom explained in a video.
They hunt only at night using a special kind of web: an A-shaped frame made from non-sticky silk that supports a fuzzy rectangle that they hold with their front forelegs and use to trap prey.
They do this in two ways. In a maneuver called a "forward strike," they pounce down on prey moving beneath them on the ground. This is enabled by their large eyes — the biggest of any spider. These eyes give them 2,000 times the night vision that we have, Science explained.
But the spiders can also perform a move called the "backward strike," Stafstrom explained, in which they reach their legs behind them and catch insects flying through the air.
"So here comes a flying bug and somehow the spider gets information on the sound direction and its distance. The spiders time the 200-millisecond leap if the fly is within its capture zone – much like an over-the-shoulder catch. The spider gets its prey. They're accurate," coauthor Ronald Hoy, the D & D Joslovitz Merksamer Professor in the Department of Neurobiology and Behavior in the College of Arts and Sciences, told the Cornell Chronicle.
What the researchers wanted to understand was how the spiders could tell what was moving behind them when they have no ears.
It isn't a question of peripheral vision. In a 2016 study, the same team blindfolded the spiders and sent them out to hunt, Science explained. This prevented the spiders from making their forward strikes, but they were still able to catch prey using the backwards strike. The researchers thought the spiders were "hearing" their prey with the sensors on the tips of their legs. All spiders have these sensors, but scientists had previously thought they were only able to detect vibrations through surfaces, not sounds in the air.
To test how well the ogre-faced spiders could actually hear, the researchers conducted a two-part experiment.
First, they inserted electrodes into removed spider legs and into the brains of intact spiders. They put the spiders and the legs into a vibration-proof booth and played sounds from two meters (approximately 6.5 feet) away. The spiders and the legs responded to sounds from 100 hertz to 10,000 hertz.
Next, they played the five sounds that had triggered the biggest response to 25 spiders in the wild and 51 spiders in the lab. More than half the spiders did the "backward strike" move when they heard sounds that have a lower frequency similar to insect wing beats. When the higher frequency sounds were played, the spiders did not move. This suggests the higher frequencies may mimic the sounds of predators like birds.
University of Cincinnati spider behavioral ecologist George Uetz told Science that the results were a "surprise" that indicated science has much to learn about spiders as a whole. Because all spiders have these receptors on their legs, it is possible that all spiders can hear. This theory was first put forward by Walcott 60 years ago, but was dismissed at the time, according to the Cornell Chronicle. But studies of other spiders have turned up further evidence since. A 2016 study found that a kind of jumping spider can pick up sonic vibrations in the air.
"We don't know diddly about spiders," Uetz told Science. "They are much more complex than people ever thought they were."
Learning more provides scientists with an opportunity to study their sensory abilities in order to improve technology like bio-sensors, directional microphones and visual processing algorithms, Stafstrom told CNN.
"The point is any understudied, underappreciated group has fascinating lives, even a yucky spider, and we can learn something from it," he told CNN.
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