A new energy revolution – similar to shifts from wood to coal to oil – is inevitable as climate change and oil scarcity drive a global search for sustainability in power production. But even the promise of renewable energy holds drawbacks.
Everyone has been conditioned to flick off lights when they leave a room – or, if they forget, to tromp dutifully back to turn them off. Many such energy-saving actions have become routines that make us feel very green, very much the global good citizens helping to reduce dependence on fossil fuels. We don't really know how Al Gore would do on this quiz. But if you take it and ace it, you might feel a little competitive with the man who won the Nobel Peace Prize for his efforts to counter climate change by reconsidering the energy choices behind the problem. Take our quiz and find out how much you really know about your energy use:
The US Postal Service and other government agencies are trying to make their transportation fleets more eco-friendly.
Biodiversity researchers warn that 20 percent of vertebrate species are threatened with extinction, largely because of human damage to habitats. But conservation efforts, they say, are effective.
As firms prepare to launch the space tourism business, one study warns that the soot from the suborbital crafts' hybrid rocket motors could collect in the stratosphere and warm the poles.
Mayor Daley has proposed the idea of privatization, after Chicago's own 'blue bag' recycling program flopped. But the next mayor may be the one to decide.
Utilities may close up to 1 in 5 coal-fired power plants after tougher EPA air pollution rules go into effect next year, Wall Street investment banker Credit Suisse recently reported. Coal power is losing its price edge to natural gas, too.
An expiring tax credit is pushing homeowners to boost energy efficiency. Can it work for you?
Google and other partners have agreed to invest in a wind power project off the mid-Atlantic coast. Environmental groups are urging research on the project's potential impact on wildlife.
To environmentalists, the lifting of the deep-water drilling moratorium Tuesday comes too soon. To the industry, it is seen as the beginning of a new era of uncertainty.
Halfway through a 10-day voyage, a government-sponsored expedition isn't finding any traces from the Gulf oil spill, directly contradicting findings by several independent research teams.
The population of Florida panthers has increased from 25 adults in 1995 to 100 today thanks to human intervention. But without continued intervention, the species will become extinct.
The first peer-reviewed scientific study of the volume of the Gulf oil spill concludes that 4.4 million barrels spewed into the Gulf – very close to the government's estimate.
Five Great Lakes states are suing Illinois to force it to close two shipping locks. But US officials are pursuing other ways to keep Asian carp out of the Great Lakes, and even the Chicago mayor has a proposal.
Some crude from the Gulf oil spill has seeped into the sand. It may be altering ecosystems – 'for all time,' one expert says.
Fracking, or hydraulic fracturing, is a controversial process for extracting natural gas from shale. Critics of fracking question the environmental and health effects of pumping thousands of gallons of water and chemicals underground.
Virus that wiped out cricket farms in Europe has American cricket-keepers worried. Zoos, theme parks, and reptile owners rely on the industry.
The natural-gas production industry has resisted providing information about fracking or hydraulic fracturing chemicals, which some say have fouled drinking-water wells.
BP raises the titanic steel blowout preventer, whose failure led to the Gulf oil spill, one of the world's worst. What story will it tell?
Plastic bags from grocery stores and pharmacies would be banned starting in 2012 under a new bill before the senate. Critics of the bill say recycling programs, not bans, are the answer.