Italian students taking oral exams have a better shot at success if they’re scheduled around midday, according to new research. Analyzing over 100,000 assessments, scientists found a clear bell curve ...

With widespread, sustained declines in fertility, the world population will likely peak in 2064 at around 9.7 billion, and then decline to about 8.8 billion by 2100 -- about 2 billion lower than some ...