While many of life's mysteries remain unsolved, every biologist can describe the basic processes performed by a living organism, including energy use, reproduction, growth and development. While these ...

The first known use of humans using wind to perform mechanical work with machines dates back to ninth-century Persian windmills. But if we count sailing vessels among those machines, the history ...

In addition to checking up on our current list, we’ve added two newly reviewed solar generators, the rugged Jackery 1500 ...