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What Was the First Photo Ever Taken?
science.howstuffworks.com/innovation/inventions/first-photo-ever-taken.htm
Joseph Nicéphore Niépce is responsible for the first photo ever taken. Almost lost to time, the image used a process called heliography.
The Meaning Behind 811 Angel Number: Messages from Your Guardian Angels
science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/811-angel-number.htm
Explore the mystical world of the 811 angel number! Learn how its messages can guide you toward personal growth and a deeper understanding of your life's purpose.
How Old Is Earth and How Did Scientists Figure It Out?
science.howstuffworks.com/how-old-is-earth.htm
In 1953, CalTech geochemist Clair Patterson came up with an estimate for Earth's age that still holds today.
Can Cats Eat Corn? Let's Talk About Obligate Carnivores
animals.howstuffworks.com/pets/can-cats-eat-corn.htm
If you've ever caught your feline friend curiously sniffing around your popcorn bowl or pawing at a cob of corn, you might wonder: Can cats eat corn?
What Eats Frogs? Birds, Snakes, Lizards, and Even Other Frogs
animals.howstuffworks.com/amphibians/what-eats-frogs.htm
Frogs aren't at the top of the food chain. In fact, the list of what eats frogs is pretty long. These amphibians are on the menu for all kinds of animals across different ecosystems.
Psychic Powers: Fun to Consider, Even Without Scientific Support
science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/psychic-powers.htm
Ever get the sense that someone is staring at you, only to turn around and find out you're right? That might be your psychic powers at work. While mainstream science doesn’t fully endorse the idea, cultures around the world have explored these abilities for centuries.
The Seahorse Diet Requires Stealth and Patience in the Wild
animals.howstuffworks.com/fish/seahorse-diet.htm
When people picture marine predators, seahorses might not top the list. But make no mistake: The seahorse diet is all about stealth, patience and tiny snacks. These oddball fish have evolved a specialized way of eating that works perfectly with their unusual shape and behavior.
The Saltiest Body of Water Isn't the Dead Sea
science.howstuffworks.com/environmental/earth/saltiest-body-of-water.htm
It sounds like a simple trivia question. In reality several lakes, seas, and ponds compete for the title of "saltiest body of water," depending on how scientists measure salinity.
How do you write the chemical reaction that takes place in a smoke detector?
science.howstuffworks.com/question5.htm
Chemical formulas provide a concise explanation for reactions. In this article, we explain the formula for the reaction in a smoke detector.
What are the odds there is life in outer space?
science.howstuffworks.com/space/aliens-ufos/extraterrestrial-life-odds.htm
Are we alone? Jodie Foster's character in "Contact" didn't think so, and neither do the scientists who've been listening for an extraterrestrial message for decades.