Online diarists rule an Internet strewn with failed dot coms.
Companies ready exhaust-scrubbing accessories.
There's a power revolution coming, and it will run on hydrogen.
Experts say lack of goals bedevils new U.S. fuel-cell initiative.
New electronic toll tags will speed freight truck inspections. But the industry cries "Big Brother."
There may be enough natural gas on earth to meet our energy needs for thousands of years. The trick is to ferry it across continents without blowing up.
How to get watts from ocean waves.
Yucca Mountain in Nevada looked like the perfect place to stash the byproducts of nuclear power. Fifteen years and billions of dollars later, it's not even close to being operational. Is starting from scratch the only option?
The first commercial "pebble bed" reactor--nearing approval in South Africa--may revive nuclear power.
Building intelligence into the power grid would make electricity cheaper and more reliable. The technology-from self-monitoring power lines to giant transistors-is ready to go. But no one has an incentive to foot the bill.