When you push or pull with a simple machine, you are applying a force and doing work. And, if you get more force out of a machine than you put into it, then that machine has a mechanical advantage.

Bryan Johnson is an unusual fellow by anyone’s standards. A millionaire venture capitalist and anti-ageing evangelist, he wants to push his lifespan and “healthspan” to the very limits by taking a ...

The California Science Center in Los Angeles is taking a road trip to a future city where solar power is beamed directly from outer space, smart buildings can generate their own power and are ...