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Top 8 Synthetic Fuels
auto.howstuffworks.com/fuel-efficiency/biofuels/8-synthetic-fuels.htm
Different types of synthetic fuels offer some advantages over fossil fuels. Find out about the top synthetic fuels and how they're processed.
What would nuclear winter be like?
science.howstuffworks.com/nuclear-winter.htm
If the sight of a mushroom cloud burning above the horizon suggests that the nuclear weapon-equipped world might end with a bang, then nuclear winter presents the notion that post-World War III humanity might very well die with a whimper.
Why Is My Cat So Clingy All of a Sudden?
animals.howstuffworks.com/pets/why-is-my-cat-so-clingy.htm
While cats are known for being independent creatures, some exhibit clingy behavior that can puzzle (and occasionally overwhelm) even experienced cat parents.
How Walmart Works
money.howstuffworks.com/wal-mart.htm
Learn the key reasons that Walmart has been able to keep its prices low -- cutting-edge technology, a frugal corporate culture and a push to make suppliers sell merchandise at cheaper and cheaper prices.
The Monarch Butterfly Is More Than an Orange Beauty
animals.howstuffworks.com/insects/monarch-butterfly.htm
The monarch butterfly (Danaus plexippus) is one of the most iconic insects in the natural world.
The Worst Air Quality in the World Is in Mountainous Terrain
science.howstuffworks.com/environmental/green-science/worst-air-quality-in-the-world.htm
Air pollution is widely recognized as a major threat to public health, and while air quality data is widely available, the large-scale solutions are often difficult to enact. There are efforts in most developed countries to improve air quality, and pretty much everyone (except the polluters) agrees that it's an urgent problem.
How Evaporative Emission Control Systems Work
auto.howstuffworks.com/evaporative-emission-control-system.htm
What is evaporative emission control and why does your car need it? Read about evaporative emission control systems at HowStuffWorks.
What's the Earth's biggest threat to biodiversity?
science.howstuffworks.com/environmental/conservation/issues/biggest-threat-to-biodiversity.htm
The biggest threat to biodiversity on Earth is explained in this article from HowStuffWorks. Learn about the biggest threat to biodiversity.
How the Hüttlin Spherical Engine Works
auto.howstuffworks.com/huttlin-spherical-engine.htm
How does the Hüttlin spherical engine work? Read about the Hüttlin hybrid auto engine at HowStuffWorks.
5 Low-cost Biofuels
auto.howstuffworks.com/fuel-efficiency/biofuels/5-low-cost-biofuels.htm
Every fuel has a monetary and ecological cost, but some are more affordable than others. Read on to find out more about five low-cost biofuels.