He just needs to get it to them
Depending on who you ask, these long-ignored, widely-scattered elements are either a dealbreaker or no problem at all
Arun Majumdar has to decide which researchers will get millions of dollars, and he has to do it fast. He must spark an energy revolution within 20 years, or it's lights out for us all.
Wind, solar, tidal—all are battling for the renewable-energy crown, but what about the six billion highly efficient short-stroke engines in our midst? What about us?
A 21st century electric-car revival is under way. But the first challenge—building a cheap, safe, powerful battery—is the hardest
Tim Bendel's off-the-shelf powerplant for the burgeoning private space industry. Watch him discuss it
Harry Schoell's engine uses superhot steam to make a cleaner, more efficient car. With video of the inventor demonstrating the engine
Its creations earn patents, outperform humans, and will soon fly to space. All it needs now is a few worthy challenges
More Military-Civillian Technology Fisticuffs: Who's Got The Edge?
Q&A; with Sen. George Allen (R-Va.)
High-speed movie cameras can shoot up to 20 million frames in the blink of an eye. The world is a mighty interesting place in ultimate slo-mo.
Green cars galore! The U.K.'s largest auto show debuts a slew of sexy new fuel-sippers
Forget algebra homework: try building spaceships, operating a nuclear reactor or listening in to distant galaxies
After a lifetime of making racecars go faster, Bruce Crower's new engine uses steam to squeeze more mileage from gas
As students everywhere return to school, the luckiest are heading for caves and rocket firing ranges instead of lecture halls
Another step toward the day when 3-D printers spit out entire spacecraft.
The industry and the F.A.A. say the climate effects of flying civilians into space will be negligible, but some scientists fret about the accumulation of black carbon in the stratosphere.