In strategy shift, Exxon plans $600 million biofuels venture. After years of snubbing alternative fuels as a bad investment, global energy giant Exxon Mobil Corp. said Tuesday it will sink $600 million into researching how to turn algae into a biofuel that would also help fight global warming. [News Source]

Charities lament ‘cash for clunkers’ program. When Congress passed a new law to give people up to $4,500 to junk their old cars and buy new, more efficient ones, the auto industry cheered. But some charities say they'll be the unintended victims of this program, and so will the low-income people they try to help. [News Source]

Sound of summer is changing as skylarks are outsung by crickets. The song of the skylark is the quintessential sound of an English summer. But now, because of global warming, it faces being drowned out - by the chirrup of crickets. [News Source]

Historic bird-watching program could help fight global warming. Almost 130 years ago volunteers around the country launched a bird-watching project that may help people understand the effects of global warming. Now, modern-day volunteers in the Bay Area are bringing that data back to life, reviving a treasure trove of science. [News Source]

Pollution outruns Adirondacks. Every day, Adirondack forests soak up and store about 1,600 tons of carbon to help slow global warming. But even tens of millions of trees can't keep up with greenhouse gas emissions from a much smaller number of cars, homes and businesses. [News Source]

Public packs Valmont power plant hearing. More than 200 people turned out Tuesday night to oppose the renewal of the coal-fired power plant’s air permit, with the majority concerned about the 1 million tons of globe-warming carbon dioxide released each year. [News Source]

Bligh goes in to bat for coal. The Queensland government is demanding special treatment to shield its coal mines from the cost of Canberra's action on climate change. [News Source]

Developed countries linger on emission reduction: Minister. Developed countries' reticence to set a reduction emission target by 2020 might be fatal for archipelagic countries, including Indonesia, State Minister for the Environment, Rachmat Witoelar, said Tuesday. [News Source]

It’s time for nuclear. Australia should drop the "caveman" approach to electricity and build some nuclear power stations, experts say. [News Source]

Dividing the burden of CO2 reduction. A Princeton proposal establishes a uniform “cap” on emissions that individuals should not exceed. By counting the excess emissions of all the individuals who are projected to surpass the “cap,” the proposal provides emissions reduction targets for each country. [News Source]

Is James Hansen still relevant? The man termed "the father of global warming" has irked many longtime supporters with his scathing attacks against President Obama's plan for a cap-and-trade system. [News Source]