With the relationship between utilities and their customers changing in unprecedented ways, new companies are deploying vast amounts of data and social psychology techniques to try to persuade people to use less electricity in their homes.

The rapid development of Alberta’s tar sands has spawned a new proposal for a 731-mile pipeline that would transport oil to the British Columbia coast. T

The killing of rhinoceroses has escalated dramatically, especially in South Africa, which is home to 75 percent of the world’s rhino population.

Years of sanctions against Myanmar’s military regime helped protect its extensive wild lands. But as the country’s rulers relax their grip and welcome foreign investment, can the nation protect its forests and biodiversity while embracing development?

Climate change received scant attention in the election campaign. But with public concern about global warming growing in the wake of Hurricane Sandy, President Obama has an unprecedented opportunity to take bold action on climate and clean energy.

Given the failure of international climate negotiations, a tax on carbon consumption is the most effective way of lowering CO2 emissions. If nations are serious about addressing climate change, then they must pay for the carbon pollution caused by what they consume.

For the past six years, photographer James Balog has deployed dozens of time-lapse cameras around the world to chronicle one of the starkest examples of global warming — melting glaciers.

Researchers have been documenting the deadly threat that fishing lines and ropes pose to large whales that become entangled in them.

On issues ranging from genetically modified crops to nuclear power, environmentalists are increasingly refusing to listen to scientific arguments that challenge standard green positions. This approach risks weakening the environmental movement and empowering climate contrarians.

The concept of pricing ecosystem services and allowing them to be bought and sold has gained wide acceptance among conservationists in recent years. But does this approach merely obscure nature’s true value and put the natural world at even greater risk?