Milkweed is the latest example of this response, according to Cornell research suggesting that plant may be shifting away from elaborate defenses against specialized caterpillars toward a more energy-efficient approach. Genetic analysis reveals an evolutionary trend for milkweed plants away from resisting predators to putting more effort into repairing themselves faster than caterpillars — particularly the monarch butterfly caterpillar — can eat them.
With the Games due to start in less than three weeks, Beijing on Sunday cranked up antipollution measures by yanking cars off the roads, expanding mass transit and staggering work hours in a bid to meet its pledge of a “green” Olympics.
Under rules to curb smog and traffic congestion that will last from July 20 to Sept. 20, owners of 3.3 million private cars can drive only on alternate days in China’s capital, based on whether the last digit of their license plates is even or odd. Those in violation face a $14 fine, a significant amount for most Chinese.
Former VP Al Gore Talks EnergyThe Associated PressFormer Vice President Al Gore is calling on the next wave of U.S. elected officials to do the right thing when it comes to global climate change and the country’s energy challenges. July 17th
The Perito Moreno glacier in Patagonia argentina, is close to collapse on Sunday in an unusual spectacle in full austral winter.
The process of breaking that started on Friday could be effect of global warming, said an official of the Los Glaciares National Park.
Hundreds of tourists came to the scene to witness the spectacle, which usually occurs in times of high temperatures. The previous rupture had been recorded in March 2006.
The process of breaking “is moving as in other years. Now it continues to be the tunnel and in a few hours will have to fall,” he said in statements television Carlos Corvalan, mayor of Los Glaciares National Park in the southern province of Santa Cruz.
“It’s the first time the glacier breaks in winter since 1917, when was the first break, until now, has always been in summer,” he said.
Breaking the barrier of ice that form the glacier on the peninsula Magallanes Lake Argentino collapses generally every four years.
The Perito Moreno glacier, which covers an area of about 200 square kilometers, has a front of about three kilometres long and a height of about 70 metres above the lake.
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