In my social psychology class, I pose an extra credit question where students choose between having two points or six points added onto their final term paper grade, with the stipulation that if more than 10% of the class chooses six points, no one gets any points.

This exercise is a classroom...

A much-anticipated book in conservation and natural science circles is EO Wilson’s Half-Earth: Our Planet’s Fight for Life, which is due early next year. It builds on his proposal to set aside half the Earth for the preservation of...

According to the World Health Organisation, nearly two billion adults and more than 40m children under the age of five were overweight and obese in 2014.

Over the past four decades, the prevalence of obesity has doubled, bringing with it significant increases in...