Embryos of the red-eyed tree frog have developed an interesting strategy to survive on a patchy supply of oxygen. To permeate the normally oxygen-deficient eggs, oxygen must first pass through a strong outer membrane. But even though tiny hairs called cilia stir the fluid inside these quarter-inch-diameter eggs, most of the oxygen is near the eggs' exposed surface.
The wind-powered Ventomobile blows away its competition on the racetrack
By Charles CrainPosted 02.12.2009 at 10:15 am 13 Comments
In summer 2007, Alexander Miller and Jan Lehmann, aerospace-engineering students at Stuttgart University in Germany, took on an unusual task: building a wind-powered vehicle that could race directly into the wind. A year later, their team unveiled its creation, the Ventomobile, which handily defeated the field at North Holland's Racing Aeolus, the first-ever track race between vehicles powered solely by wind.
Now you can rock out even with puny laptop speakers. Normally when you try to pump up the bass using the equalizer settings in iTunes or other software, you inadvertently distort your music's sound by boosting frequencies that small speakers can't reproduce. New software and chips promise crisper sound and fuller bass, using tricks such as toning down the extra-low frequencies that your speakers can't handle. We tested the tech by cranking the volume on CDs, DVDs and MP3s on three laptops.
Let's take a look at the ingredients in a typical can of cat food: meat by-products, chicken by-product meal, turkey by-product meal, ash, taurine. Nothing too horrible, but in general, these things don't constitute a healthy human diet, says Dawn Jackson Blatner, a registered dietitian with the American Dietetic Association. "That said, I'm fully confident that your body can handle kitty chow."
Aggressive driving -- lead-footed acceleration, speeding, excessive braking -- can slash highway mileage by 33 percent, according to government estimates. Honda's Insight hybrid, arriving in April, softens the effects of wasteful driving and tells you when you're indulging in bad habits.