Water quality along Los Angeles County's coast has improved due to less runoff.
The pontiff is tweeting up a storm about his new climate change encyclical.
Aquifers around the world are being depleted at an alarming rate, according to NASA.
Watch author and activist Denis Hayes give an elevator pitch for his new book "Cowed" -- in an actual elevator.
The desk lunch will never be the same.
The FDA will ban partially hydrogenated oils (PHOs), the largest source of trans fats in processed foods, by 2018. This is a big deal.
A Canadian teen captures explosive aerial footage of an iceberg collapsing, sets it to dramatic music.
Watch Son Little perform a stripped-down version of "Cross My Heart" at last year's Pickathon.
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