The president, in an address to the General Assembly, says nations are at a crossroads and that the international system must meet challenges ranging from terrorism to disease.
High schoolers are vulnerable to depression. Telling teenagers that people and circumstances can change and things will get better helps reduce the risk of depressive symptoms, a study finds.
The World Maker Faire comes to one of the nation's most diverse neighborhoods.
The latest report in response to the horse meat scandal of 2013 reminds us that the potential for fraud in the food supply is high. But scientists are working to predict and prevent the next incident.