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Your search for "greenhouses" returned 376 results
5 Farming Technologies That Changed the World
science.howstuffworks.com/environmental/green-science/5-farming-technologies-changed-world.htm
Farming technologies have allowed the world to be fed, even though most people no longer farm. Only 2 percent of Americans are farmers, versus 90 percent in the 1700s. Which tools and technologies have had the most impact on farming and why?
How Motherhood Works
people.howstuffworks.com/motherhood.htm
What's it like to be a mom today? Read about motherhood past, present and future at HowStuffWorks.
How Organic Food Works
science.howstuffworks.com/environmental/green-science/organic-food.htm
Organic food promises freedom from synthetic ingredients. Find out what organic food is, how organic farming works, what the pros and cons are, and why you should care.
How Car Cooling Systems Work
auto.howstuffworks.com/cooling-system.htm
A car engine produces so much heat that there is an entire system in your car designed to cool the engine down to its ideal temperature and keep it there. Learn all about fluid-based cooling systems.
How Aquaculture Works
animals.howstuffworks.com/animal-facts/aquaculture.htm
Aquaculture provides food and replenishes other scarce resources. Learn how aquaculture works and how aquaculture industry supplies the goods we use.
How Off-peak Cooling Systems Work
home.howstuffworks.com/home-improvement/heating-and-cooling/off-peak-cooling-systems.htm
Off-peak cooling systems can help cool your home in an energy-efficient way. Learn about off-peak cooling systems.
How did the East India Company change the world?
history.howstuffworks.com/world-history/east-india-company-influence.htm
The British East India Company established major precedents for corporations. Read about Queen Elizabeth's East India Company's ruthless quest for profit.
8 Things Invented or Discovered by Accident
From cornflakes to Silly Putty, many of the things we consume today were created unintentionally. Here are the stories behind eight well-known inventions.
How Acid Rain Works
science.howstuffworks.com/nature/climate-weather/atmospheric/acid-rain.htm
Acid rain is caused by emissions of sulfur dioxide and nitrogen oxides from power plants, cars and factories. Find out how acid rain is produced.
Caring for Bromeliads
home.howstuffworks.com/caring-for-bromeliads.htm
Bromeliads vary greatly in size, shape, color, distribution, and ease of growth. Learn about their characteristics and how to care for these plants.