Though a modern naturalism movement has tried to shame mothers who don't, won't, or can't breastfeed, using bottles of animal milk - the prehistoric version of formula - turns out to be an ancient tradition.

Infant feeding vessels made of clay first appear in Europe in the Neolithic and became more commonplace throughout the Bronze and Iron Ages. The vessels are small enough to fit in a baby's hands, have a spout, and sometimes even feet and are shaped like imaginary animals. 

A new study worries that teabags containing plastic come with a dose of micro- and nano-sized plastics.

Opposing views on e-cigarettes, witnesses interrupting members of Congress and even a wink. A hearing Tuesday on the epidemic of respiratory injuries linked to vaping was one unusual show.

Since the spring, hundreds of reports have surfaced about severe lung injuries associated with vaping and using e-cigarettes. The Centers for Disease Control and Prevention has identified at least 530 cases, including at least seven deaths, and states have reported two others.

In recent weeks, as the news crept wider into the headlines, it galvanized state and federal public health officials to warn people against vaping until the crisis is better understood.

Everyone is a mutant but some are prone to diverge more than others. The difference is largely based on two influences. One is the age of a child's parents. A child born to a father who is 35 years old will likely have more mutations than a sibling born to the same father at 25. 

The second is that the effects of parental age on mutation rates differ considerably among families -- much more than had been previously appreciated. In one family, a child may have two additional mutations compared to a sibling born when their parents were ten years younger. Two siblings born ten years apart to a different set of parents may vary by more than 30 mutations.

Impostor syndrome is where people feel like frauds even if they are actually capable and well-qualified. A new group of interviews finds that impostor syndrome is quite common and uncovers one of the best -- and worst -- ways to cope with such feelings.

If human beings go to Mars, they need food - and that means macaroni and cheese. 

Currently, plastic packaging can keep food safe at room temperature for up to twelve months but a new paper in the journal Food and Bioprocess Technology could keep ready-to-eat macaroni and cheese safe and edible with nutrients for up to three years. It's proof-of-concept but they may have time to get it right, if delays and development of the James Webb Space Telescope are an indication of the glacial timescale that NASA will need to send humans back to space.