Insights and opinions from our readers
Better catalysts could be the key to unlocking hydrogen as a source of efficient, reliable power.
Want to lose weight? Easy! Just remember the first law of thermodynamics: conservation of energy. Oh, and you'll have to not mind being hungry.
Web-based meeting space makes for cheaper virtual get-togethers
The Yucca Mountain nuclear waste depository assumes geological stability over 10,000 years. Too bad the government didn't pay more attention to what geologists had to say.
Guest Essay: The continued health of capitalism depends on a system that produces not only goods but also healthy customers-who will not flourish in depleted, polluted, and desperate conditions.
Top executives from the automotive, computer, and pharmaceutical industries lay out their visions of technological advance.
Scientists are gathering data to help Mexico City curb pollution.
Some technologies are so blatantly obnoxious that the human race would rejoice if they were summarily executed. A humorist and science fiction writer offers some candidates.