For at least a decade, the quadruple axel jump was figure skating’s white whale. “It’s been this unreachable thing, like the four-minute mile” once was, says Matthew Lind, a technical specialist for U ...

Mathematician Richard Evan Schwartz of Brown University tackled the problem in a recent study by working backward from an existing polyhedral torus to answer questions about what would be needed to ...

One type of cognitive training appears to reduce the risk of dementia 20 years later. Even a modest amount of mental exercise ...