In 2002, an unknown mathematician quietly posted a paper online that stunned the academic world. It solved a problem that had defeated the greatest minds for over a century. A $1 million prize and the ...

Concentration is the mental effort you put into a task. You might lose concentration due to distractions, lack of sleep, aging, or health conditions. Consider talking with a doctor or therapist if ...

The miracle material has made modern life possible. But more than 40 percent of it is used just once, and it’s choking our waterways. Just after dawn in Kalyan, on the outskirts of Mumbai, India, ...