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Your search for "tertiary" returned 41 results
Do Dogs Get Embarrassed When We Dress Them Up?
animals.howstuffworks.com/pets/do-dogs-get-embarrassed.htm
Humans experience a wide range of emotions, but what about dogs? Do they ever get embarrassed by their humans? HowStuffWorks investigates.
The Richest Countries in Africa, Based on GDP
money.howstuffworks.com/richest-countries-in-africa.htm
Western nations often think of the entire African continent as poor, thanks, in large part, to the legacies of the transatlantic slave trade and European colonialism. The truth is, many African countries were wealthy before colonization.
Color Wheel Theory: How to Talk About Color
science.howstuffworks.com/color-wheel-theory-how-to-talk-about-color.htm
Modern color theory got its start with, believe it or not, Sir Isaac Newton, who also discovered a little thing called gravity and invented calculus.
Summer-grade Versus Winter-grade Fuel
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/summer-fuel1.htm
What's the difference between summer-grade fuel and winter-grade fuel? If summer-grade fuel is so great, why don't we use it year-round?
Which of today's animals lived alongside dinosaurs?
science.howstuffworks.com/environmental/earth/geology/dinosaur-contemporary.htm
Which of today's animals lived alongside dinosaurs? Some animals' ancestors lived with dinosaurs. Learn which current animals lived alongside dinosaurs.
NASA Gets Ready to Punch an Asteroid in 2022 With DART Mission
science.howstuffworks.com/nasa-punch-asteroid-in-2022-dart-mission.htm
In 2022, NASA is planning on ramming a spacecraft into an asteroid to knock it off course. Learn more about the DART mission at HowStuffWorks.
How Termites Work
animals.howstuffworks.com/insects/termite.htm
Termites have existed for 50 million years and can be found throughout the world. Learn about termites and find out how termite colonies are structured.
Have we reached peak oil?
science.howstuffworks.com/environmental/green-science/peak-oil.htm
Oil is a nonrenewable resource. Have we found all the oil there is to find, or is there more out there somewhere? What's the best way to wean ourselves from our oil dependency?
How Sewer and Septic Systems Work
home.howstuffworks.com/home-improvement/plumbing/sewer.htm
Each time you flush the toilet or wash something down the drain, you create sewage. Find out where it goes before it flows into a river near you!
How Gasoline Works
science.howstuffworks.com/gasoline.htm
Without gasoline, the world as we know it would grind to a screeching halt. The U.S. alone consumes well over a hundred billion gallons of gasoline per year. Learn all about this vital fuel.