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How Supervolcanoes Work

science.howstuffworks.com/nature/natural-disasters/supervolcanoes.htm

Only a few natural events pack the power to knock global civilization on its heels. One is a planet-killing meteor. Care to guess the other?

What Would a Yellowstone Eruption Mean for North America?

science.howstuffworks.com/science-vs-myth/what-if/what-if-yellowstone-supervolcano-erupted.htm

Welcome to Yellowstone, a natural wonderland that's home to stunning vistas, vibrant plant and animal life ... and a massive and potentially devastating supervolcano.

Ridiculous History: The Time We Erased One of the World's Biggest Waterfalls

history.howstuffworks.com/historical-events/ridiculous-history-guaira-falls.htm

GuairĂ¡ Falls between Paraguay and Brazil was one of the world's most awe-inspiring, but was erased by Itaipu Dam. Read this HowStuffWorks Now article.

Not Just Rocks: The Geology Quiz

play.howstuffworks.com/quiz/geology-quiz

Geologists study the processes and substances that form Earth. Most of those processes happen over millions of years, but this quiz only takes a few minutes! Find out how rock solid your knowledge of geology is.

What Are the 7 Largest Countries in the World by Area?

science.howstuffworks.com/environmental/earth/geophysics/largest-countries-in-world-by-area.htm

The seven largest countries in the world account for nearly half of the world's land area, but one is far larger than the rest. Do you know what the largest country is?

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?

What Caused the Mysterious Carolina Bays?

science.howstuffworks.com/environmental/earth/geophysics/carolina-bays.htm

Some say UFOs, while others say a meteor strike formed the Carolina Bays. Whatever created these isolated ponds and wetlands across North and South Carolina left a wondrous ecosystem that is in dire need of protection.

10 Longest Rivers in the U.S.: From the Missouri to the Brazos

science.howstuffworks.com/environmental/earth/geophysics/longest-river-in-the-us.htm

We bet you're looking up the longest river in the U.S. to settle a bet: Is it the Missouri River or the Mississippi River? It depends how you measure.

How can parts of Canada be 'missing' gravity?

science.howstuffworks.com/environmental/earth/geophysics/missing-gravity.htm

For more than 40 years, scientists have tried to figure out what's causing large parts of Canada to be "missing" gravity. The force of gravity around Hudson Bay is lower than surrounding areas. Learn about two theories that may explain the phenomenon.

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