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How do motion sensing lights and burglar alarms work?
home.howstuffworks.com/home-improvement/household-safety/question238.htm
How can motion-sensing lights detect your presence, and what prevents them from seeing you when you're standing still? It all comes down to the movement of light.
5 Things You Need to Know: Bonding With Grandparents
Bonding with grandparents is important, whether they live far away or next door. Learn 5 things you need to know about bonding with grandparents.
It's Easy to Grow Edible 'Shrooms in Your Kitchen
recipes.howstuffworks.com/food-science/grow-mushrooms.htm
Amateur mycologists abound and do-it-yourself mushroom growing kits are all the worldwide rage today. Find out how you too can get started growing your own edible mushrooms.
Taking Up Two Parking Spaces Is Clearly Horrible, But May Not Be Illegal
people.howstuffworks.com/taking-up-two-parking-spaces-illegal-ticket.htm
Is it illegal for one car to take up two parking spaces? Learn more about the intricacies of this breach of parking etiquette on HowStuffWorks.
Donate Your Hair to Help Keep Our Water Clean
science.howstuffworks.com/environmental/green-tech/remediation/hair-clean-up-oil-spills.htm
Hair trimmings from salons and personal donations can be repurposed as mats that soak up oil spills and help protect the environment.
Can hydrogen be the fuel of the future?
science.howstuffworks.com/environmental/energy/hydrogen-fuel-future.htm
When it comes to looking to the energy source that will replace fossil fuels, there are no shortage of options.
How to Prevent Odors in Toilets
We don't have to tell you that toilets are dirty and no fun to clean. But we can tell how to prevent them from staying stinky all the time.
Why do I have black gums?
health.howstuffworks.com/wellness/oral-care/problems/black-gums.htm
Wondering why you have black gums? In many cases there is hope for treatment. Learn why you might have black gums.
The Sumatran Orangutan Faces Large-scale Habitat Loss
animals.howstuffworks.com/endangered-species/sumatran-orangutan.htm
The Sumatran orangutan, scientifically named Pongo abelii, inhabits the lush rainforests of Sumatra. These arboreal primates, known as "persons of the forest" in Malay, are highly intelligent and share close genetic ties with humans.
How to Start a Fire In Your Backyard
home.howstuffworks.com/how-to-make-bonfire-in-your-backyard.htm
To make a bonfire in your backyard, build a teepee with logs as a base and tinder in the center. Learn how to make a bonfire in your backyard in this article.