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Don't let your Christmas tree get so thirsty

Why icebergs from Greenland are melting in the middle of London

New Jersey makes history by banning wild animal circus acts

Sensitive Santas help autistic kids find the spirit of the season

Vitamin D deficiency linked to depression

5 foods besides romaine that can have E. coli

Why we should ban glitter, just like we banned microbeads

Milan will counter climate change with help from 3 million new trees

What's so healthy about nuts?

Wetlands are in the crosshairs of proposed Clean Water Act changes

Conservationists plant a 'super grove' of redwood trees cloned from ancient stumps

You've heard of black holes, but what about white holes?