Search Results | human population
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Phthalates Are Everywhere and Scientists Are Worried
health.howstuffworks.com/wellness/phthalates.htm
Phthalates are chemicals that make plastics stronger and they're in just about everything you touch. But are they harmful to your health?
How Polar Bears Work
animals.howstuffworks.com/mammals/polar-bear.htm
Polar bears are iconic for their shocking whiteness, ferocity and sheer size. Learn about polar bears, polar bear diet and polar bear habitat.
The Banded Water Snake Is an Opportunistic Hunter
animals.howstuffworks.com/snakes/banded-water-snake.htm
The banded water snake is one of the most fascinating aquatic reptiles you'll find slithering through the waterways of the southeastern United States.
The Most Recent Extinct Animal Was Last Seen in 1995
animals.howstuffworks.com/extinct-animals/most-recent-extinct-animal.htm
Today, we're delving into a sobering topic: recently extinct animals. Species extinction is accelerating, with many species disappearing due to habitat destruction, invasive species and climate change.
The Euphrates River, at the 'Cradle of Civilization,' Is Drying Up
science.howstuffworks.com/environmental/conservation/issues/euphrates-river.htm
The Euphrates River is one of the most important water systems in recorded history.
10 Advancements in Environmental Engineering
science.howstuffworks.com/engineering/civil/10-advancements-environmental-engineering.htm
Environmental engineering existed long before it had a name. It began at the dawn of civilization when we started changing our surroundings to meet our needs.
Gray Fox vs. Coyote: Comparing Canids of the Wild
animals.howstuffworks.com/mammals/gray-fox-vs-coyote.htm
At a glance, the gray fox vs. coyote match-up might look lopsided. One is a medium-sized wild dog, the other a nimble omnivore that can climb trees.
The Wolf Spider Actively Hunts Prey Instead of Building Webs
animals.howstuffworks.com/arachnids/wolf-spider.htm
The wolf spider is one of the most impressive hunters in the arachnid family. Known for their speed, excellent vision and fascinating parenting habits, these spiders are a critical part of ecosystems around the world.
Where Is the Coldest City in the World?
science.howstuffworks.com/nature/climate-weather/atmospheric/coldest-city-in-the-world.htm
If you're looking for a place to live and you don't mind some seriously frosty winters, you have plenty of options to choose from. But some places endure more than a few blustery months, and no parka or insulated mittens will feel like enough. Those are contenders for the title of coldest city in the world.
Don't Be Afraid of the Big, Bad Wolf Spider
animals.howstuffworks.com/arachnids/dont-be-afraid-big-bad-wolf-spider.htm
Wolf spiders might find their way into your house and can look threatening, but they're really harmless.