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Your search for "pollution" returned 269 results
Polaris Star: How to Spot the North Star in the Night Sky
science.howstuffworks.com/north-star.htm
Polaris, also known as the North Star, is almost exactly over the celestial North Pole, making it extremely useful for navigation (and for making wishes on, as well).
How Supervolcanoes Work
science.howstuffworks.com/nature/natural-disasters/supervolcanoes.htm
Only a few natural events pack the power to knock global civilization on its heels. One is a planet-killing meteor. Care to guess the other?
What happens to abandoned mines?
science.howstuffworks.com/engineering/structural/abandoned-mine.htm
Abandoned mine shafts may look romantic with their clapboarded entrances and rusting pickaxes, but they can be deadly. So who ensures that these dangerous sites are properly closed up? You may find the answer a little unsettling.
What is green gaming?
science.howstuffworks.com/environmental/green-science/green-gaming.htm
Green gaming is catching on as gamers realize the ecological impact of their consoles, computers and games. Learn about green gaming and green video games.
Can New York City's Skyscrapers Accommodate Vertical Farming?
science.howstuffworks.com/environmental/conservation/issues/vertical-farming.htm
Vertical farming is a method of large-scale farming in an urban environment. Learn about the benefits of a vertical farm and vertical farming technology.
How Does a Silencer Work?
science.howstuffworks.com/question112.htm
How in the world can a gun silencer work? How can you possibly take an explosive noise that can damage your hearing and turn it into a little "ffft" sound?
What if we ran out of fossil fuels?
science.howstuffworks.com/science-vs-myth/what-if/what-if-ran-out-fossil-fuels.htm
We wouldn't stop requiring power. So how would a turn to alternative energy sources work out for transportation, international trade and our daily diets?
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.
Top 5 Green Robots
science.howstuffworks.com/environmental/green-tech/sustainable/5-green-robots.htm
There's nothing particularly organic about a robot, even if you dress it in hemp and fuel it with alternative energy. But these five can help our planet one mechanical movement at a time.
Will we soon be extinct?
science.howstuffworks.com/life/evolution/mass-extinction.htm
A mass extinction on Earth is long overdue, according to population ecologists. Find out what Earth's fossil record may be telling us about our future.