Search Results | environment
Your search for "environment" returned 3,798 results
Do hybrid cars cause pollution?
auto.howstuffworks.com/fuel-efficiency/hybrid-technology/hybrid-cars-cause-pollution.htm
Do hybrid cars cause pollution? Find out if hybrid cars cause pollution at HowStuffWorks.
Why Do We Sleep?
science.howstuffworks.com/life/inside-the-mind/human-brain/sleep.htm
Every animal sleeps -- some more than others -- but why they do it is a mystery to scientists. Is sleep more than just beauty rest? Could skimping on it kill you? And how much do you really need?
What causes aging?
health.howstuffworks.com/wellness/aging/aging-process/aging-causes.htm
Aging causes include both genetic and environmental factors. Find out what research says about aging causes and rates of aging.
How the Toyota PM Works
auto.howstuffworks.com/toyota-pm.htm
With the unveiling of the Personal Mobility (PM) concept car, Toyota's designers have shared a new vision of personalized travel. Find out all about the PM's design, power, and unique features.
What Is the Chemtrails Conspiracy Theory?
science.howstuffworks.com/transport/flight/modern/what-are-chemtrails.htm
It's hard to look up in the sky on a clear day and not see a "cloud" trailing from an airplane. They're called contrails, though some refer to them as "chemtrails" and have odd explanations for their existence.
How Garbage-powered Cars Could Work
auto.howstuffworks.com/fuel-efficiency/biofuels/garbage-powered-car.htm
Garbage-powered cars aren't just science fiction. Read about the ins and outs of garbage-powered cars and running cars on solid waste.
Why do we kill?
science.howstuffworks.com/life/inside-the-mind/emotions/why-do-we-kill.htm
Why do we kill? There's no doubt that humans are a violent species. Find out why we kill and what makes people more inclined to kill.
How to Prevent Automotive Rust
auto.howstuffworks.com/under-the-hood/vehicle-maintenance/prevent-automotive-rust.htm
Automotive rust is a common problem. Learn how to prevent automotive rust at HowStuffWorks.
Do biofuels compete with food?
auto.howstuffworks.com/fuel-efficiency/biofuels/biofuels-compete-with-food.htm
Do biofuels compete with food? Read about whether or not crops are going to vehicles to the detriment of our food supply.
There Are Over 70 Cat Breeds — We'll Be Impressed If You Can Name Half of Them!
Are you feline like a challenge? Hit paws on whatever you're doing and turn your attention to this fur-midable quiz. Purrhaps if you stay focused you'll get a purrfect score. Think you're ready? Let's get started meow!