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Former EPA chief: Keystone XL will be built

Christine Todd Whitman says there are valid environmental concerns with the Keystone XL pipeline but thinks it'll ultimately be built.

A Republican supports Obama's climate plan

Former EPA chief Christine Todd Whitman says the federal government has to take proactive steps to combat the effects of climate change.

Where cell phones go to die

Much of the world's electronic waste ends up in Guiyu, China, where old parts are recycled but chemicals like mercury leak into the water.

Philippines tap energy from Earth's core

The Philippines is the second largest producer of geothermal energy, but the country is looking to export its renewable energy program to other nations.

Battle lines set over Keystone pipeline

The Obama Administration is expected to decide the fate of the pipeline project in 2013, and the debate between protestors and TransCanada continues.

Vertical farms solve land problem

With land prices at a premium in Singapore, vertical farms with rotating vertical racks present a sustainable solution while cutting down pollution.

Making an island energy independent

Renewable energy has been used in Corsica, France, for decades. Now the island is considered an experiment for the newest technologies.

Profiting from pulling nasty weeds

Aquatic hyacinth is overtaking Africa's Lake Victoria, but entrepreneurs are using the invasive weed to create baskets and rope to sell.

Gas guzzlers need to go on a diet

CNN's Fareed Zakaria reports that cars have gotten increasingly heavier and looks at one scientist's design for the lighter car of the future.

The Waldorf's new guests: Honey bees

New York's iconic Waldorf-Astoria hotel is playing host to a swarm of bees in return for fresh honey offered exclusively to guests.