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Mobile Menu HowStuffWorks Science Tech Home & Garden Auto Culture More More Health Money Animals Lifestyle Entertainment Quizzes Coupons Mobile Newsletter 1 Submit Search SearchScience Tech Home & Garden Auto Culture Health Money Animals Lifestyle Entertainment Quizzes Coupons Submit Search Sign up for our Newsletter! Mobile Newsletter banner close ​ HowStuffWorks Newsletter Mobile Newsletter chat close Mobile Newsletter chat dots Mobile Newsletter chat dots Mobile Newsletter chat dots Mobile Newsletter chat avatar Mobile Newsletter chat subscribe " " Scallions vs. Green Onions: What’s the Difference? Our Top Reads There Are More Animals That Start With ’X’ Than You’d Expect By Mitch Ryan What’s the Biggest TV Size for Homes vs. Stadiums? By Yara Simón, Nathan Chandler Do Video Games Cause Violence in Real Life? By Julia Layton HowStuffWorks on Facebook HowStuffWorks on Flipboard HowStuffWorks on Instagram " " Every Celtic Knot Holds Meaning Within Its Intricate Design " " How to Hide Friends on Facebook " " Angel Number 1919: Unveiling Its Spiritual Significance and Symbolism " " 202 Angel Number: Unveiling Its Meaning and Significance Try Our Crosswords, Riddles and Puzzles! " " Can You Solve This Riddle? " " Play Our Crossword! " " Can You Solve This Riddle? In the News Why Is There a Gap at the Front of Public Toilet Seats? May 2 By Chris Opfer How to Deactivate Facebook April 23 By Zach Taras, Nathan Chandler 5 Tips on Sneaker Rehab From a Sneaker Restoration Expert April 16 By Alia Hoyt Yours, Mine or Ours? Leaf Blowing and the Law April 16 By Laurie L. Dove Germs May Help Shape Our Personalities April 16 By Julia Layton Gigantic Undiscovered Cave Found in British Columbia April 16 By Patrick J. Kiger " " Ghost in the Machine: When Does AI Become Sentient? " " Is Borax Harmful or Helpful? Did You Hear? " " Unveiling the Celestial Secrets of the 2323 Angel Number Unlocking the Secrets of Angel Number 616: A Transformative Journey Angel Number 606: Unveiling the Secrets of Balance and Spiritual Growth 10 of the Deadliest Snakes in the World How to Enable Google Chrome Dark Mode on All Your Devices Science 12 Healing Crystals and How to Use Them Sagrada Familia Basilica Is Almost Finished, After 140 Years How to Easily Convert Degrees to Radians (and Radians to Degrees) How Handwriting Analysis Works Culture The ’X’ Factor: Why Some Advocates Prefer ’Latine’ to ’Latinx’ Nameless But Never Forgotten: The Tomb of the Unknown Soldier Martha Mitchell: The Woman Who Knew Too Much About Watergate 15 Famous Rhodes Scholars Animals How to Know When It’s Time to Say Goodbye to a Pet The Pink Fairy Armadillo Is as Mystifying as Its Name Looks and Acts Like a Hummingbird? Could Be a Hummingbird Moth Why Does My Dog Lick Me? Auto Why Can’t You Pump Your Own Gas in New Jersey? How to Add Coolant to Car How the Amphicar Worked Why Is My Steering Wheel Hard to Turn? 4 Troubleshooting Tips Editor’s Picks " " Why Is There a Crack in the Liberty Bell? " " How American Exceptionalism Works " " Black Loyalists Fought for Their Freedom During the American Revolution A River Runs Through It " " The 9 Longest Rivers in the World: From the Nile to the Congo When it comes to rivers, longest doesn’t necessarily mean biggest, and length can be difficult to determine, so the top spot will always be debated. " " Eco Engineers: 5 Animals That Can Reshape Earth’s Waterways " " River-bottom Bones: The Strange World of Underwater Fossil Hunting " " What Is the World’s Shortest River? " " Mudlarkers Pull Historical Artifacts Out of Riverbank Muck Get Your Garden On " " Don’t Toss That Joe! Use Diluted Coffee to Fertilize Plants " " ’Roly-poly’ Bugs Are Great Garden Composters " " How ’Lasagna Gardening’ Helps Create Healthy Soil " " How Composting Works " " Companion Planting: The Do’s and Don’ts of Growing Plants Together Learn which plants benefit each other — and which plants shouldn’t be neighbors — to get the most out of your garden. Deserts of the World " " 5 of Earth’s Highest Deserts Not all deserts have sand and they’re certainly not all hot. They’re just extremely dry and have little vegetation. That means deserts are located all over the planet, including at super-high elevations. " " 10 Largest Deserts in the World " " Hunting for Martians in the Most Extreme Desert on Earth " " The Sahara Desert Is Getting Bigger " " Saharan Dust: The Good, the Bad and the...