Most of us first hear about the irrational number π (pi)—rounded off as 3.14, with an infinite number of decimal digits—in ...

If you're a parent with kids in school, you may have noticed they might be getting less homework than they used to or maybe none at all. That's a relief for some families and dismaying to others. We ...

GRIFFITH, Australia—At a tiny airport in the Australian countryside last month, a small plane took off carrying a device that could transform how U.S. drones, aircraft and ships navigate across future ...