liberty Martin

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The Quest For Greener Weed

The cash crop is hogging more and more water and energy as U.S. production grows. So some pot industry insiders are taking early steps to make it more sustainable.<p>Growing weed isn’t usually very green. In rural California, where marijuana is the top cash crop, it uses massive amounts of water …

Chelsea’s Mammoth Skeleton May Be A Hybrid Wooly Mammoth Species [Video]

The discovery of Chelsea’s mammoth skeleton has everyone excited because the find was so unexpected. In addition, the wooly mammoth may not be a …

Refill stations: Why the Detroit Zoo no longer sells bottled water

To eliminate litter associated with disposable plastic water bottles, Detroit Zoo has introduced water bottle refill stations.<p>The Detroit Zoo has …

Water

Earth & Sky Photo Contest winners capture jaw-dropping auroras and star trails

Auroras, the clouds of the Milky Way and trails of stars shine overhead in the remarkable photos chosen as winners of the 6th International Earth & …

Northern Lights

Knee Replacement Surgery Is the Most Popular Procedure Among the Newly Insured

A lot of Obama­care en­rollees have a new spring in their step.<p>Knee-re­place­ment sur­gery was the most dis­pro­por­tion­ately pop­u­lar …