House Republicans just can’t let go of the Keystone XL pipeline. Speaker Boehner now says it could be part of a bill expanding domestic energy production.

The value of renewable energy deals grew by two-fifths last year, which means, according to analysts, that businesses like wind and solar are “maturing.”

Yosemite could limit the number of hikers who ascend to the top of Half Dome each day.

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California is requiring cars to give off fewer greenhouse gas emissions.

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A toxic spill in China could impact more than 1 million people.

And activists are prodding the Chinese government to take action on air pollution.

The Texas drought and expensive feed dropped cattle numbers in the U.S. to the lowest they’ve been at since 1958.

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