Teasing out the
causes of this
is a daunting challenge.
But the payoff should
be better, more
On the Road to Fuel-Cell Cars
Although fleets of fuel-cell prototypes are hitting the streets,
basic technical and market obstacles must be hurdled before the clean, hydrogen-powered cars reach dealer showrooms
Misconceptions about the Big Bang
Baffled by the expansion of the universe? You're not alone. Even astronomers frequently get it wrong
Inventor of Dreams
Nikola Tesla, the father of today's AC electrical system and other key inventions, often failed to bring his visionary ideas to real-world fruition
If Smallpox Strikes Portland ...
"Episims" unleashes virtual plagues in real cities to see how social networks spread disease. That knowledge might help stop epidemics
How Did Humans First Alter Global Climate?
A bold new hypothesis suggests that our ancestors' farming practices kicked off global warming thousands of years before we started burning coal and driving cars
Endangered Wild Equids
Wild zebra, asses and horses are being killed for meat, medicine and money. Combined with vanishing habitats and naturally slow reproduction, such predation threatens remaining populations