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A New Green Solution for Dyeing Blue Denim
science.howstuffworks.com/environmental/green-tech/sustainable/denim-dyeing.htm
From the chemicals that pollute and the massive use of water, the traditional method of dyeing blue jeans is an environmental disaster. Nanoparticles made from wood pulp might be the answer to the problem.
Why Distant Mountains Appear Blue to the Naked Eye
science.howstuffworks.com/mountains-appear-blue.htm
Your eyes aren't playing tricks on you. Those mountains way off in the distance really do look blue, and it's because of how light wavelengths scatter in the atmosphere.
Don't Toss Those Cardboard Tubes! 10 Ways to Reuse Them
home.howstuffworks.com/green-living/reuse-cardboard-tubes.htm
Don't trash your paper towel, toilet paper and wrapping paper tubes. Give them a second life with one of these 10 hacks instead.
April's Pink Moon Is Pretty, But Not Really Pink
science.howstuffworks.com/pink-moon.htm
April's pink moon isn't called pink because our beloved bright white moon suddenly takes on a rosy hue. So, why is it called the "pink moon"?
Can we use vegetable oil as fuel in cars and electrical generators?
auto.howstuffworks.com/fuel-efficiency/biofuels/vegetable-oil-fuel-cars-generators.htm
Can we use vegetable oil as fuel in our cars and in electrical generators? The short answer is yes. The longer answer is, well, yes, with a good number of qualifications.
How long does it take gut flora to recover from antibiotics?
Antibiotics save lives. But broad-spectrum antibiotics can really do a number on the delicate ecosystem in your intestines -- and the recovery time may surprise you.
Elk vs. Moose Antlers and Mating Behavior (Yes, They're Related)
animals.howstuffworks.com/mammals/elk-vs-moose.htm
Elk vs. moose comparisons are a lot easier to make when you realize that two of the largest members of the deer family differ significantly in size, behavior and appearance.
15 Must-see Mountain Ranges in the U.S.
science.howstuffworks.com/environmental/earth/mountain-ranges-in-the-us.htm
From the Arctic Circle to the warm climes of the southern border, the mountain ranges in the U.S. offer some of the most stunning, geologically diverse landscapes in North America.
What's the Hardest Wood in the World?
science.howstuffworks.com/hardest-wood-in-the-world.htm
You might think oak or hickory is tough, but when it comes to the hardest wood in the world, they don’t even come close.
The Smallest Frog Is Smaller Than Your Fingernail
animals.howstuffworks.com/amphibians/smallest-frog.htm
The smallest frog on Earth is so tiny it can sit on a dime and still leave space around its toes. Scientists studying amphibians discovered that some frogs have shrunk to extraordinarily small sizes while still functioning as complete vertebrate animals.