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When will life on Earth end?
science.howstuffworks.com/life/evolution/life-on-earth-end.htm
Imagine a time in Earth's far-flung past when organisms didn't swim through the oceans or populate the lands. Even the mighty dinosaurs hadn't arisen. Will the planet ever return to that lifeless state?
What Is Citric Acid, and Is It Safe?
recipes.howstuffworks.com/food-science/citric-acid.htm
HowStuffWorks finds out what citric acid is, how it is made and whether or not it is safe.
How Did the Goldfish Become Everyone's First Pet?
animals.howstuffworks.com/pets/goldfish.htm
Goldfish are easy to care for, as long as you follow three basic steps. HowStuffWorks tells you what they are.
The Bengal Cat Hybrid Has a Controversial Backstory
animals.howstuffworks.com/pets/bengal-cat.htm
A hybrid cross between a small Asian leopard cat and a domestic cat, the Bengal cat will keep you busy with its intelligence and active personality. It may even shower with you.
Delightful Daffodils Are Super Easy to Grow. Here's How
science.howstuffworks.com/life/botany/daffodils.htm
Requiring little care and upkeep, daffodils are bright, showy perennials that symbolize rebirth and new beginnings.
Dragonflies: Ancient and Aggressive Insect Aviators
animals.howstuffworks.com/insects/dragonflies.htm
Dragonflies are ancient, fast, powerful and unbelievably aggressive in all their life stages. HowStuffWorks gets to know these fascinating insects.
How Much Do You Know About Latin America?
play.howstuffworks.com/quiz/how-much-do-you-know-latin-america
Latin America is a patchwork of different cultures, beliefs, languages and backgrounds. Some of the facts about Latin America will be clear, while others will astound you. Let's separate the ignorant from the know-it-alls.
Cinnabar: Red, Beautiful — and Toxic
science.howstuffworks.com/environmental/earth/geology/cinnabar.htm
Cinnabar's bright-red pigment has been used in jewelry, pottery and makeup for millennia. But cinnabar is also the primary ore for mercury, making it a dangerous mineral if the particles are inhaled.
The Christmas Candy Quiz
play.howstuffworks.com/quiz/the-christmas-candy-quiz
Nothing makes for a sweeter Christmas than a stocking full of candy to nibble on! While sugary treats have long been a part of traditional holiday celebrations, today's candy makers offer a variety like never before for those looking to satisfy that Christmas sweet tooth. Take our quiz to see how much you know about the goodies and gum drops that add a little something extra to the holidays!
Can You Get a Perfect Score on This Optical Illusions Quiz?
play.howstuffworks.com/quiz/can-you-get-a-perfect-score-this-optical-illusions-quiz
The question is, can we trick your eyes to believe that the size of an object is different than it is? We'll be transparent -- we'll fool you with illusions, weird perspectives and horizon lines. Think you can get all of them right? Then start now.