Resveratrol, a chemical found in red wine, remains effective at fighting cancer even after the body's metabolism has converted it into other compounds, according to a new paper in Science Translational Medicine.

Resveratrol is metabolized very quickly and it had previously been thought that levels of the extracted chemical drop too quickly to make it usable in clinical trials. The new research shows that the chemical can still be taken into cells after it has been metabolized into resveratrol sulfates. Enzymes within cells are then able to break it down into resveratrol again – meaning that levels of resveratrol in the cells are higher than was previously thought.

Transgendered androphilic males may have been accepted in ancient hunter-gatherer cultures because they were an extra set of hands to support their families, according to a new article in Human Nature.

Nocturnal animals use their noses to stay alive. Mice, among others, depend on their impressive olfactory powers to sniff out food or avoid danger in the dark, using a streamlined system that sends the sensory cue to neural centers in the brain that need only a few synapses to rapidly initiate instinctive fleeing behavior. 

A tuberculosis vaccine developed at McMaster University published phase one clinical study results today.

 Tuberculosis is a serious public health threat. One-third of world's population is infected with the organism that causes tuberculosis. The current vaccine used to prevent it is ineffective and high incidence of multi-drug resistant tuberculosis is also a problem.

Nearly one in three American children are overweight or obese, but sugary sweets are often on the menu at elementary school classroom parties.  Previous small-scale studies have found that "kids consume a lot of calories at classroom parties," but little has been known about how state and district policies impact this aspect of the school food environment. 

 The U.S. Department of Agriculture has issued nationwide standards governing competitive foods and beverages in schools as required by the Healthy, Hunger-Free Kids Act of 2010. However, USDA regulations do not address foods and beverages served during school parties. 

The great angiosperm radiation of the mid-Cretaceous, the dramatic explosion of flowering plant species that occurred about 100 million years ago, is thought to have been good news for evolving mammals, providing them with new options for food and habitat. 

Previous literature suggested the spread of angiosperms, along with the evolution of pollinating insects, may have spurred an increase in the diversity of mammals. The idea made sense: The radiation would likely have resulted in more food sources from seeds, fruits, leaves and insects.

Not always.