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Your search for "could" returned 13,345 results
How Glasses Correct Colorblindness
health.howstuffworks.com/human-body/systems/eye/glasses-correct-colorblindness.htm
Colorblindness affects around 300 million people worldwide. HowStuffWorks explains what it is and how glasses can help.
What Do Babies See Before Birth?
Very little is currently known about what or how fetuses see. HowStuffWorks looks at a study changing that.
Cake, Candles and Check: Who Pays the Birthday Dinner Bill?
people.howstuffworks.com/cake-candles-and-check-who-pays-birthday-dinner-bill.htm
HowStuffWorks finds out whether it's rude to expect birthday guests to pay for their own meal.
What Happens If You Don't Poop for 47 Days?
health.howstuffworks.com/human-body/systems/digestive/what-happens-if-dont-poop-47-days.htm
HowStuffWorks explains what happens if you don't - or can't - defecate for several weeks.
Ridiculous History: When Scientists Hid Under Beds to Do Research
Experimental protocol has changed since the 1930s when two researchers hid under the beds of college students to eavesdrop on their conversations.
Aphantasia: When Your Mind's Eye Is Blank
health.howstuffworks.com/human-body/systems/nervous-system/aphantasia.htm
It sounds like it might be a creativity killer not to be able to picture things in your head, but some experts say it has advantages and disadvantages.
The World Cries as 'Oppy' Dies
science.howstuffworks.com/world-cries-as-oppy-dies.htm
NASA's Mars rover Opportunity's last words were: "My battery is low and it's getting dark."
5 Reasons People Still Refuse to Own a Microwave Oven
home.howstuffworks.com/five-reasons-people-still-refuse-to-own-microwave.htm
The microwave oven is a ubiquitous appliance in kitchens today, but don't we all have that one holdout friend who still refuses to own one?
The Great Red Spot May Expose Jupiter's Watery Secret
science.howstuffworks.com/great-red-spot-may-expose-jupiters-watery-secret.htm
Finding a reservoir of water on Jupiter is one of the most pressing issues in planetary science. Learn more about water on Jupiter at HowStuffWorks.
Do Fire-breathing Dragons Torch Their Teeth?
Fire will turn a human's teeth to dust. But what about a dragon's?