• HYDROGEN CARS READY TO ROLL — FOR A PRICE If you can’t wait five, 10 or 20 years for the much-touted "hydrogen economy," then step right up: Several companies are ready to sell you hydrogen powered sports cars, pickups and even Hummers.
• DO WARMING DANGERS LIE UNDER SEAS? Dozens of global warming tests on trees and plants have been held worldwide, but not one has been conducted on marine life under the ocean, even though the seas are major factors in climate change. Miguel Llanos reports.