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.

New York City had been gradually preparing for a world of rising seas and more powerful storms. But the devastation caused by Hurricane Sandy is now forcing officials to consider spending billions of dollars on storm protection, including a network of surge barriers.

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.

Bill Gates is backing the world's largest algae farm. What does he know that the rest of us don't?

At our recent VERGE São Paulo event, leaders from IBM, GE and WWF agreed that private sector collaboration is needed to help spur advancements in sustainable technology.

A few companies across the aviation sector have signed on to the idea of using sustainable fuel -- Boeing is among them. But to be able to use it effectively, an industry-wide commitment is needed.

A host of start-up companies are exploring ways to harness the enormous amount of wind energy flowing around the earth, especially at high altitudes. But as these innovators are discovering, the engineering and regulatory challenges of what is known as airborne wind power are daunting.

German airline brokers deal to fund production, while Australian biofuel company will take home the profits.

The amount of time it takes to recharge lithium-ion batteries has been a major impediment to consumer acceptance of electric vehicles. But a host of companies and researchers are working intensively to develop a battery that can recharge in 10 minutes and power a car for hundreds of miles.