Greenhouses like this one could one day make their own power thanks to clear solar panels.

High-voltage electric lines are part of the giant network that makes up the electric grid.

Sharpshooter insects (one shown) slurp hundreds of times their body weight in sap each day. That means they pee constantly, flinging it out of the way using a tiny barb on their rear ends.

Protons appear as some of the little balls in the tight central core of this artist’s rendering of an atom. New calculations show that most of a proton's “mass” does not come from its quark building-blocks.