For the first time, scientists have been able to use data from brain scans to identify who patients are thinking about. Read More >>

If you've ever wondered what thinking about nothing looks like, here it is. It's the result of an experiment by artist Gustav Metzger, who hooked himself up to a robotic carving machine—while thinking long and hard about absolutely nothing. Read More >>

Taking exams; crunching through a tough problem at work, or even concentrating while driving in difficult conditions can leave you feeling physically exhausted. But does thinking really hard burn more calories, or does the exhaustion come from somewhere else? Read More >>