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How tall can a tree grow?
science.howstuffworks.com/life/botany/tree-grow.htm
Can a tree grow and grow? Or can a tree grow only to the point that water transport limits it? Learn more about tree growth and the tallest trees.
How did a shipwreck double the size of the United States?
history.howstuffworks.com/history-vs-myth/el-cazador-shipwreck.htm
The El Cazador shipwreck took with it the money that was to buy the Louisiana territory for Mexico. Find out more about the El Cazador shipwreck.
How Geothermal Energy Works
science.howstuffworks.com/environmental/energy/geothermal-energy.htm
Geothermal energy is clean, abundant and renewable. Learn about geothermal energy, geothermal heat pumps and geothermal power plants.
Are grease cars legal?
auto.howstuffworks.com/fuel-efficiency/vehicles/grease-car.htm
A grease car can save you a lot of money on fuel, but can it also cost you in fines from the government? Learn about grease car legality and the EPA.
Is NASCAR really that bad for the environment?
science.howstuffworks.com/environmental/green-science/nascar-environment.htm
Is NASCAR bad for the environment? Find of if NASCAR is bad for the environment in this article.
How Digital Shopping Lists Work
electronics.howstuffworks.com/gadgets/kitchen/digital-shopping-lists.htm
Digital shopping lists are great kitchen gadgets to have around the house. Learn more about digital shopping lists at HowStuffWorks.
How Overweight Loads Work
auto.howstuffworks.com/auto-parts/towing/towing-capacity/information/overweight-load.htm
An overweight load can be a dangerous thing to tow. Learn what constitutes an overweight load at HowStuffWorks.
How Anti-sleep Alarms Work
electronics.howstuffworks.com/gadgets/automotive/anti-sleep-alarm.htm
Anti-sleep alarms can help protect sleepy drivers from road accidents, but few people know what they are or how they work. Learn how anti-sleep alarms work here.
Lipozene: What You Need to Know
health.howstuffworks.com/medicine/medication/lipozene.htm
Lipozene is a popular weight loss medication. Learn more about Lipozene at HowStuffWorks.
How Street Sweepers Work
auto.howstuffworks.com/street-sweeper.htm
Street sweepers have been around for more than a century keeping our roads clean. Learn the history of street sweepers and what they're like today.