By Gregory Mone
Posted 09.19.2003 at 2:11 pm 0 Comments
Over the past decade, astronomers have become convinced that normal matter-stuff like atoms, electrons, and everything else we have ever observed-makes up only 4 percent of the universe. And the other 96 percent, you ask? Well, they're not so sure. Part of it is called dark matter,
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.