Did last ice age affect breastfeeding in Native Americans?

The critical role that breast feeding plays in infant survival may have led, during the last ice age, to a common genetic mutation in East Asians and Native Americans that also, surprisingly, affects the shape of their teeth.

Wallowing in mud is more than just temperature control

(PhysOrg.com) -- While it is well accepted knowledge that pigs wallow in mud in order to regulate body temperature and keep cool, a new study published in Applied Animal Behavior Science shows that the wallowing behavior ...

Mapping the inner workings of a living cell

Imaging tools like X-rays and MRI have revolutionized medicine by giving doctors a close up view of the brain and other vital organs in living, breathing people. Now, Columbia University researchers report a new way to zoom ...

Simple device monitors health using sweat

A device that monitors health conditions in the body using a person's sweat has been developed by Penn State and Xiangtan University researchers, according to Huanyu "Larry" Cheng, assistant professor of engineering science ...

Skin biology illuminates how stem cells operate

(PhysOrg.com) -- As a girl, Elaine Fuchs borrowed her mother’s old strainers and mixing bowls to collect polliwogs, an activity she credits for her present-day career as a biologist.

Shining stem cells reveals how our skin is maintained

All organs in our body rely on stem cells in order to maintain their function. The skin is our largest organ and forms a shield against the environment. New research results from BRIC, University of Copenhagen and Cambridge ...

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