Search Results | technology tree
Your search for "technology tree" returned 752 results
No One Knows What Caused a Massive 1908 Explosion in Siberia
Theories surrounding the source of the Tunguska blast that rocked the Siberian region in 1908 abound. But the exact cause is still a mystery.
Can Santa Really Climb Down the Chimney?
people.howstuffworks.com/culture-traditions/holidays-christmas/santa-chimney.htm
Can Santa really climb down the chimney? Learn about some of the different methods Santa Claus might use in order to fit down a chimney.
10 Types of Wasps: Fierce but Not Always Threatening
animals.howstuffworks.com/insects/types-of-wasps.htm
Think all wasps are just angry insects looking to ruin your picnic? Think again. There are types of wasps that build nests underground, some that live in solitary splendor and others that are downright helpful to your garden.
How Acid Rain Works
science.howstuffworks.com/nature/climate-weather/atmospheric/acid-rain.htm
Acid rain is caused by emissions of sulfur dioxide and nitrogen oxides from power plants, cars and factories. Find out how acid rain is produced.
15 Brown Birds You'll Spot in the Northern Hemisphere
animals.howstuffworks.com/birds/brown-birds.htm
Brown birds are often ground-dwelling, foraging, nesting birds. In Native American cultures, birds are also sometimes seen as messengers between the spirit world and the physical realm, so a brown bird could be seen as bringing a connection to Earth, home, reliability, simplicity and consistency.
10 Plants Lost to History
science.howstuffworks.com/life/botany/10-plants-lost-to-history.htm
Are trees and shrubs as cute as pandas? As awe-inspiring as whales? Maybe not, but many are in danger of going the way of the dodo - just like countless leafy greens before them. Learn about some amazing plants we lost to history.
A RagaMuffin Cat Is Like a Feline Teddy Bear
animals.howstuffworks.com/pets/ragamuffin-cat.htm
If you've never heard of a RagaMuffin cat, you're in for a treat. These big, fluffy felines are like teddy bears that purr. Their sweet personalities and plush coats make them a dream for first-time cat owners and seasoned pet parents alike.
What Are Frankincense and Myrrh?
science.howstuffworks.com/life/botany/question283.htm
The three wise men in the story of Christmas carried gold, frankincense and myrrh. What are frankincense and myrrh? Can you still get them these days?
How Ecofeminism Works
science.howstuffworks.com/environmental/green-science/ecofeminism.htm
Ecofeminism is a social movement that combines elements of feminism with ecology. Learn about ecofeminism and famous ecofeminists.
14 Animals That Start With 'Y': From Yeti Crabs to Yorkie Poos
animals.howstuffworks.com/animal-facts/animals-that-start-with-y.htm
Are you going through the alphabet for a car game and stuck on animals that start with "Y"? Lucky you, that's our specialty.