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Your search for "why" returned 10,389 results
What is a cavity in a tooth? Why do they drill it?
health.howstuffworks.com/wellness/oral-care/problems/question106.htm
What is a cavity in a tooth? Why do they drill it? If a cavity is a hole, why would you drill it to make the hole even bigger?
Why do people have red eyes in flash photographs?
electronics.howstuffworks.com/question51.htm
Why do people have red eyes in some flash photographs? Take a look at the science behind why red eyes happen.
Why are the waves on the U.S. West Coast larger than the waves on the East Coast?
science.howstuffworks.com/environmental/earth/question623.htm
West coast waves in the U.S. are larger than those on the east coast. Find out why west coast waves are larger than east coast waves in this article.
Why Aren't Seat Belts Required on All School Buses?
auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/seatbelts-on-school-buses.htm
Most school buses in the U.S. don't have seat belts, leaving the children inside vulnerable to injury in a crash. HowStuffWorks wants to know why.
Why Do Lemurs Live Only in Madagascar?
animals.howstuffworks.com/mammals/lemurs-live-in-madagascar.htm
Lemurs live in Madagascar - and no other place on Earth. But long ago, they thrived all over the planet. Learn why lemurs live only in Madagascar.
Why do small changes in Earth's temperature have a big impact?
science.howstuffworks.com/environmental/green-science/changes-earth-temperature-impact.htm
Though not everyone agrees why the Earth is getting warmer, temperatures are inching up worldwide. A couple of degrees doesn't seem like such a big deal. What difference can a subtle change make?
Why Did Cars Have 'Suicide Doors' and Do They Still Exist?
auto.howstuffworks.com/suicide-doors.htm
The popular name for car doors that opened from the rear rather than the front is "suicide doors". Why are they called that, and do any cars have this feature?
Why Do Raccoons Wash Their Food?
animals.howstuffworks.com/mammals/raccoons-wash-food.htm
It appears that thieving raccoons wash food when they dine near a body of water. Learn why raccoons wash food, and what this behavior really means.
Why are wolves making a comeback in the United States?
animals.howstuffworks.com/mammals/wolf-population-comeback.htm
Wolves are making a comeback due to federal laws that protect these animals. Learn why some people aren't excited about wolves making a comeback.
How many sharks are killed recreationally each year -- and why?
animals.howstuffworks.com/fish/sharks/shark-fishing.htm
Shark fishing is endangering these saltwater fish that have been around longer than the dinosaurs. Learn why shark fishing has become such a threat.