Pollen

Bones of a mastodon found at an archaeological site on the banks of the Acelhuate  River in El Salvador in 2013. (credit: Jose Cabezas/AFP/Getty Images)

Colorado Mastodon Bones Show Ancient Warmer Earth

A trove of ancient bones from gigantic animals discovered in the Colorado mountains is providing scientists with a fascinating look at what happened about 120,000 years ago.

11/27/2014

(credit: CBS)

Seasonal Allergies Get An Early Boost

Even if you aren’t sneezing or feeling the effects of allergies, chances are you know someone who is suffering.

03/27/2013

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