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Can You Tell What Countries These International Border Crossings Are In?
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Borders delineate the shapes of nations and the limits of their reach, culturally, militarily and in terms of natural resources. Border crossings have been flashpoints throughout history. Could you recognize them if you saw them?
Why Is It Colder at the Top of a Mountain Than It Is at Sea Level?
science.howstuffworks.com/nature/climate-weather/atmospheric/question186.htm
Air temperature is colder on top of a mountain than at sea level, but if heat rises how is this possible? Learn about air temperature in this article.
Three Famous Hypotheses and How They Were Tested
science.howstuffworks.com/innovation/scientific-experiments/hypothesis.htm
From Isaac Newton to Ivan Pavlov, scientists have developed and tested hypotheses through carefully crafted experiments for centuries. Here are three groundbreaking hypotheses and the predictions they tested.
Rising Rock: Earth's Crust Has Its Own Tides, Too
science.howstuffworks.com/environmental/earth/geology/rising-rock-earths-crust-has-its-own-tides.htm
The oceans on planet Earth cycle through daily tidal changes. But the ground beneath our feet experiences tides of its own, too.
How the Hunt for D.B. Cooper Worked
history.howstuffworks.com/historical-events/hunt-for-d-b-cooper-worked.htm
After nearly 50 years capturing the imaginations of millions, the D.B. Cooper plane-hijacking case is closed. Will we ever know the true culprit?
How Wind Power Works
science.howstuffworks.com/environmental/green-science/wind-power.htm
When air moves quickly, that motion means kinetic energy, which can be captured. Learn how the simplest possible wind-energy turbine works.
How Freelance Magazine Writing Works
money.howstuffworks.com/magazine-writing.htm
Ever have a great story idea? Ever consider writing it up? Getting published in a magazine is not as hard as you may think. Find out what it takes to get paid by the word.
10 Worst Adaptations in the Animal Kingdom
science.howstuffworks.com/life/evolution/10-worst-animal-adaptations.htm
Humans can certainly claim some of these, but sloths, giraffes and pandas wanted a piece of the action, too. The hyena adaptation, however, may just blow your mind.
How Wood Pellet Stoves Work
home.howstuffworks.com/wood-pellet-stove.htm
Wood pellet stoves are more cost-effective and environmentally friendly than a heater or a fireplace. Learn more about wood pellet stoves.
How Avalanches Work
science.howstuffworks.com/nature/natural-disasters/avalanche.htm
Learn how avalanches form, how long you can stay alive while buried under an avalanche and what steps you can take to survive.