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Space farming is the process of cultivating plants in space. Learn why space farming is important and how space farming will affect life on Earth

E-waste refers to your discarded electronics and electrical devices. Learn why it's so difficult to properly recycle e-waste.

Though houseflies scavenge and carry disease, houseflies also provide food for the local ecosystem. Learn why houseflies love the great indoors.

Inheritance tax is also known as an estate tax or death tax. Find out why a grieving family has to pay an inheritance tax.

Is there something in turkey that makes you sleepy? Learn why sleepiness is common after Thanksgiving dinner and how the amino acid tryptophan works.

HowStuffWorks finds out why sloths expose themselves to so much danger by leaving their tree homes to poop on the ground.

At many sports games, you'll hear the cry 'DEE-FENSE.' HowStuffWorks finds out who started it and why.

Allergies are so commonplace that we often do not stop to think of how or why they occur. Learn more about how allergies work.

For the first time ever, men will be cheering professionally at the Super Bowl. HowStuffWorks looks at why they've made the change.

The smell of Play-Doh® modeling compound is instantly recognizable to millions of people. Learn about its history and why it acts the way it does.

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