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Your search for "visible universe" returned 525 results
What Do Rainbows Mean?
science.howstuffworks.com/nature/climate-weather/atmospheric/10-rainbow-myths.htm
A rainbow's ability to bring joy to just about anyone is probably why they're painted on kids' cheeks at fairs. But, what do rainbows mean? In this article, we'll look at rainbow symbolism from around the world.
How Nanotechnology Works
science.howstuffworks.com/nanotechnology.htm
Nanotechnology is so new, no one is really sure what will come of it. Even so, predictions range from the ability to reproduce things like diamonds and food to the world being devoured by self-replicating nanorobots.
Where Do Roaches Come From and How Do They Get Into Homes?
home.howstuffworks.com/home-improvement/repair/roaches-in-house.htm
How do roaches come into the house? If your place is pristine you don't expect roaches as house guests. Learn how roaches come into the house.
How Long Does the Once-dimming Star Betelgeuse Have Left?
science.howstuffworks.com/betelgeuse.htm
Star-gazers gasped when they saw how much Betelgeuse dimmed in 2019 and the reason wasn't clear. Even though it's back up to full strength, how long will it be before it explodes? We haven't seen a supernova in over 400 years.
What's a shark's "yummy hum"?
animals.howstuffworks.com/fish/sharks/shark-yummy-hum.htm
A yummy hum is a sound that dying fish emit -- it's like a dinner bell to a shark. Read about the theory of the yummy hum and how it beckons sharks.
Scientists Warn Western U.S. Drought Could Be 'New Normal'
science.howstuffworks.com/nature/natural-disasters/western-us-drought-news.htm
Nearly 90 percent of the Western U.S. is gripped by an "apocalyptical" drought that only continues to worsen. Even if you don't live in the area, it affects you - and what you do affects it.
WWII Sparked America's Shark Obsession, Not 'Jaws' or Shark Week
animals.howstuffworks.com/fish/sharks/wwii-sparked-americas-shark-obsession.htm
Decades before Discovery started its wildly successful Shark Week, Americans were transfixed by stories of shark-infested waters.
How to Save Tomato Seeds for Planting
recipes.howstuffworks.com/menus/how-to-save-tomato-seeds-for-planting.htm
Are you wondering how to save tomato seeds for planting. Find out how to save tomato seeds for planting in this article.
The Ultimate Twilight Quiz
play.howstuffworks.com/quiz/twilight-quiz
Are you a sparkly Twi-hard or a pale imitation? Take this "Twilight" quiz to test your knowledge of the books, films and trivia.
NASA's 10 Greatest Achievements
science.howstuffworks.com/ten-nasa-achievements.htm
NASA's 10 greatest achievements range from technical feats to displays of human ingenuity. Learn about NASA's 10 greatest achievements.