When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. In a newly discovered letter written by Albert Einstein, the renowned physicist suggested there ...

Speed alone may be the factor that draws many sports fans to the bobsled, luge and skeleton events at this year’s Beijing Winter Olympics. But beneath the thrilling descents of the winding, ...

I understand Chanda Prescod-Weinstein’s problem with the physics of flight (11 June, p 28). As a designer and builder of model aircraft when young, I found references to Bernoulli’s principle were ...