"It’s like a really cool science project," said one student who took part in the harvest. "We get to check the pH, the nutrients, and this lettuce grew in 28 days." ...

The theory behind hydropower is very simple: water obeys gravity and imparts the gained kinetic energy onto a turbine, which subsequently drives a generator.  The devil here is, of course, in all ...

As the world looks to incorporate more renewables into energy grids, centuries-old systems that can balance supply and demand ...