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How did dinosaurs leave tracks in solid stone?
science.howstuffworks.com/environmental/earth/geology/stone-dinosaur-track.htm
How did dinosaurs leave tracks in solid stone? They walked in soil that became sedimentary rock. Learn how did dinosaurs leave tracks in solid stone?
How did public fountains, like those in Rome, work without any type of motor to pump the water?
science.howstuffworks.com/engineering/structural/question33.htm
Rome is famous for having large public fountains that work without the use of any kind of mechanized pump. How were these fountains able to generate enough water pressure without a motor? Check out this article for the answer to this question.
How did scientists find soft tissue in dinosaur fossils?
science.howstuffworks.com/environmental/earth/geology/soft-tissue-dinosaur-fossil.htm
How did scientists find soft tissue in dinosaur fossils? It shouldn't be possible. Learn how did scientists find soft tissue in dinosaur fossils.
How did writing evolve?
science.howstuffworks.com/life/evolution/writing-evolve.htm
Did writing evolve much in the same manner as language evolved? In this article, you can learn about writing and the evolution of writing.
How do Astronauts Poop in Space?
science.howstuffworks.com/bathroom-in-space.htm
A bathroom in space requires unique engineering that is different from a bathroom on Earth. Learn about the features of a bathroom in space.
How do I build a telescope at home?
science.howstuffworks.com/question568.htm
How do I build a telescope at home? Use these step-by-step instructions.
How do I know if I'm eating cloned meat?
science.howstuffworks.com/innovation/edible-innovations/cloned-meat.htm
Cloned meat can come from the offspring of cloned livestock. Learn how cloned meat gets to your table, and why some people don't want to eat cloned meat.
How do astronauts eat in space?
science.howstuffworks.com/astronauts-eat-in-space.htm
Astronauts eat in space with the help of special contraptions and carefully packaged food. Learn more about how astronauts eat in space.
How do astronauts function in their space suits for hours at a time?
science.howstuffworks.com/question544.htm
I would like to know how an astronaut, who is in a space suit for hours, can eat, drink and eliminate fluid- and solid-waste byproducts? What "mechanics" are built into the suit and how do they operate?
How do bacteria communicate?
science.howstuffworks.com/life/cellular-microscopic/bacteria-communication.htm
Bacteria communication exists, just these tiny organisms have a different way of talking. Learn how bacteria communication works.