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Do solar powered cars cause pollution?

auto.howstuffworks.com/fuel-efficiency/vehicles/solar-powered-cars-pollution.htm

Do solar powered cars cause pollution? Keep reading to learn about solar powered cars and if they cause pollution.

The True and Tragic Story of Tilikum, SeaWorld's Captive Orca

animals.howstuffworks.com/marine-life/tilikum.htm

Orcas are known as "killer whales" because they are apex predators. In the wild, highly social killer whales prey on sharks, seals, dolphins and even other whales.

Room-temp Pizza: A Gamble or Good-to-go?

health.howstuffworks.com/food-nutrition/room-temp-pizza-gamble-or-good-to-go.htm

Leftover pizza is practically a staple in college dorms and bachelor pads, but is it safe to eat at room temperature?

Can the Change in Temperature Really Make You Sick?

health.howstuffworks.com/diseases-conditions/cold-flu/can-change-in-temperature-really-make-sick.htm

Weather-driven sickness is a thing, but it isn't always the temperature that causing the illness. HowStuffWorks looks at what it is making you sick.

Why Do Dogs Have Wet Noses?

animals.howstuffworks.com/pets/why-do-dogs-have-wet-noses.htm

Dog people often hear if a dog's nose is dry, the dog is sick. If that's true, does a wet nose signal a healthy dog? HowStuffWorks gets the answers.

Ancient Egyptian Pregnancy Test Survived Millennia Because It Worked

science.howstuffworks.com/life/biology-fields/ancient-egyptian-pregnancy-test-survived-millenia-because-it-worked.htm

A strange, but surprisingly accurate, ancient Egyptian pregnancy test survived for millennia and was spread around Africa and Europe because it was just that effective.

U.S. Trans Fat Ban Goes Into Effect. Almost.

recipes.howstuffworks.com/us-bans-artificial-trans-fats-almost.htm

The U.S. bans artificial trans fats. HowStuffWorks looks at how the replacement is going.

Did people in the past really only live to be 30?

history.howstuffworks.com/history-vs-myth/did-people-in-past-really-only-live-to-be-30.htm

Back in the day people generally didn't live past the age of 30, or so we've been told. Learn the truth about our ancestors at HowStuffWorks.

Why do some cultures believe you shouldn't sleep with your feet toward the door?

people.howstuffworks.com/sleep-with-feet-toward-door.htm

In many cultures, it's considered vital that you don't sleep with your feet toward the door. Find out why.

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