Search Results | human population
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How Hot Is Too Hot for the Human Body?
science.howstuffworks.com/life/biology-fields/how-hot-is-too-hot-outside.htm
Heat waves are becoming supercharged as the climate changes. How hot is too hot for normal daily activity, even for young, healthy adults?
The Average Height for Men Varies Widely Around the World
health.howstuffworks.com/human-body/average-height-for-men.htm
How tall is the average guy? It’s a question that bridges human biology, geography and public health.
Polar Bear vs. Grizzly Bear: Which Bear Is Bigger and Tougher?
animals.howstuffworks.com/mammals/polar-bear-vs-grizzly-bear.htm
When it comes to massive, powerful bears, one showdown often comes to mind: polar bear vs. grizzly bear! These two bear species may look similar, but they have distinct differences in habitat, behavior and even diet. So, what happens when these giants of the animal kingdom cross paths?
The Highly Venomous Boomslang Snake Keeps to the Trees
animals.howstuffworks.com/snakes/boomslang-snake.htm
Native to Sub-Saharan Africa, the boomslang snake is known for its remarkable agility, bright green coloration and potent venom. Despite being one of the few snakes capable of delivering a fatal bite to humans, this tree snake is timid and generally avoids confrontation.
Can You Identify These Big Cats?
play.howstuffworks.com/quiz/can-you-identify-these-big-cats
There are plenty of different big cats found throughout the world, but how well do you know them? Take this quiz if you believe that you can correctly identify them all!
Can you build a better chair?
science.howstuffworks.com/innovation/science-questions/build-a-better-chair.htm
No really, can you? Sure, there are lots of chairs out there. Some rock. Some roll. Some recline. Some remain so crazy modern that we're afraid to direct our keisters onto their serious coolness. How you would change this staple of sedentary life?
What Is Alcohol and What Does It Do to the Human Body?
science.howstuffworks.com/alcohol.htm
More than 2.3 billion people across the globe drink alcohol, but most don't consider it a drug. But if you've ever seen someone who's had too much, you know alcohol has profound effects on the mind and body.
Pacu Fish: The Piranha Cousin With Human-like Teeth
animals.howstuffworks.com/fish/pacu-fish.htm
In 2023, 11-year-old Charlie Clinton from Oklahoma made headlines by catching a pacu - a South American fish known for its human-like teeth - in a pond behind his house, far from its native Amazon habitat.
The Hippopotamus Is Social in Water, Solitary on Land
animals.howstuffworks.com/mammals/hippopotamus.htm
Did you know the word "hippopotamus" comes from the ancient Greek for "river horse"? But don't let that fool you; this big, lumbering mammal is anything but a horse. In fact, it's one of the most powerful animals living in Sub-Saharan Africa today.
Coyote vs. Wolf: Differences in Size, Habitat and Behavior
animals.howstuffworks.com/mammals/coyote-vs-wolf.htm
Learn how to identify coyote vs. wolf tracks, where you can expect to find the species and how their behaviors differ.