Historically, people have used stopwatches, cameras or trained eyes to assess walking and its deficits. However, recent technological advances such as motion capture, wearable sensors and data science ...

Motion sickness is really common when riding in a car and reading or using your phone. Your eyes, focusing on what’s in your hands, don’t see any movement but your inner ear feels every acceleration, ...

When I was a teenager, I was—shockingly, I know—deeply nerdy. At a science-fiction convention, I bought a button that read, “186,282 miles/second: Not just a good idea, it’s the law.” It was poking ...