We all think about space exploration, but we also need to think about dodging 50 years of debris from space exploration - aluminum, steel, nylon, even liquid sodium from Russian satellites. Sierra Club hasn't started fundraising over this issue yet but they might after reading this article.

According to NASA, there are more than 21,000 pieces of 'space junk' roughly the size of a baseball in orbit, and about 500,000 pieces that are golf ball-sized. Sure, space is big, but when a piece of space junk strikes a spacecraft, the collision occurs at a velocity of 5 to 15 kilometers per second, roughly ten times faster than a speeding bullet.

Michael Graner, PhD, a CU Cancer Center investigator and associate professor of neurosurgery at the CU School of Medicine, experimented on his dog.

Before anyone yells "Tesla!" and PETA gets up in arms, he did it for the best of reasons.  At age 12, his great dane Star collapsed during a coughing fit and Graner discovered the cause: lung cancer, specifically advanced bronchoalveolar adenocarcinoma with metastasis to the lymph nodes. The prognosis was grim, with a median survival from diagnosis of only about 6-27 days. And Star was well past the age when she could've tolerated chemotherapy or radiation. 

The minds of murderers who kill impulsively - crimes of passion, as they are commonly called - and those who carefully carry out premeditated crimes differ markedly both psychologically and intellectually, according to a new paper.

Adults may not understand what an infant is feeling but it's child's play to another baby.

A paper in Infancy contends that infants can recognize each other's emotions by five months of age. 

"Newborns can't verbalize to their mom or dad that they are hungry or tired, so the first way they communicate is through affect or emotion," says  psychology professor Ross Flom  of
Brigham Young University
. "Thus it is not surprising that in early development, infants learn to discriminate changes in affect."

Rat poison used for marijuana fields is killing fishers in the southern Sierra Nevada, according to a new paper.