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10 Signs You May Be Sleep Deprived
health.howstuffworks.com/mental-health/sleep/disorders/10-signs-you-may-be-sleep-deprived.htm
Are you sleep deprived? About 45 percent of the world's population isn't getting enough sleep. See 10 signs you might be sleep deprived.
How Self-regenerating Tire Tread Works
auto.howstuffworks.com/self-regenerating-tire-tread.htm
Self-regenerating tire tread allows big rigs to go 30 percent farther on their tires. But will self-regenerating tire tread soon be found on your car too?
Why Do Electrical Prongs Have Holes in Them?
home.howstuffworks.com/two-flat-prong-plug-holes.htm
If you unplug any appliance in your house, there's a 98 percent chance than the two flat prongs have holes in them. Find out the reasons for these holes.
How Hydropower Plants Work
science.howstuffworks.com/environmental/energy/hydropower-plant.htm
Hydropower plants produce about 24 percent of the world's electricity and supply more than 1 billion people with power. Find out how hydropower plants work.
Delta Variant and Unvaccinated Are Threats to Eliminating COVID-19
health.howstuffworks.com/diseases-conditions/infectious/delta-variant-coronavirus-news.htm
The wildly contagious delta coronavirus variant now accounts for more than 80 percent of cases in the United States. Does it pose a threat to eliminating COVID-19 across the globe?
What Is the Largest City in the World by Population?
people.howstuffworks.com/culture-traditions/cultural-traditions/largest-cities-in-world.htm
Of the 8 billion people now inhabiting this planet, almost 60 percent live in urban environments in some pretty densely packed cities. Here are the top 10 megacities in the world.
Like Everything Else, Thanksgiving Will Cost a Lot More This Year
The price of the average American Thanksgiving increased about 14 percent over last year. Why so much? Blame the supply chain crisis and the COVID-19 pandemic, of course.
Q&A with a NICU Nurse
health.howstuffworks.com/pregnancy-and-parenting/baby-health/special-needs/nicu-nurse-questions.htm
NICU nurses take care of 10 to 15 percent of American babies every year. Find out about the neonatal intensive care unit from a registered NICU nurse.
How Chopsticks Became the Staple Utensil of Asia
recipes.howstuffworks.com/chopsticks.htm
Chopsticks have been in use since 1200 B.C.E. And today 20 percent of the world's population use the utensil. HowStuffWorks looks at its history.
Who's Watching the Adults? Facing Old Age Without Children
A report showed that 20 percent of U.S. women born after 1970 don't have children. HowStuffWorks Now looks at who will provide elder care.