This is part 3 of my series on Mars, planet of surprises, great to explore, not so great to colonize. In "Is it as good a place to live as a desert? we saw that Mars is a more inhospitable place…

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…

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…

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…

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…

This is part 3 of my series on Mars, planet of surprises, great to explore, not so great to colonize. In "Is it as good a place to live as a desert? we saw that Mars is a more inhospitable place…

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…

Risky sexual behavior and substance abuse have always orbited HIV but it isn't just shared needles; drugs like cocaine make people engage in lots of other risky behaviors. The epidemiology of…

Industry has made efforts to reuse or to transport shale gas wastewater to deep injection wells, but wastewater is still discharged into the environment, after being treated, in some states.  In…

Where is 'sea level' and how far above sea level is a particular place located?  Quite a lot of things may go wrong in bridge building and the inhabitants of the German and the Swiss parts of…