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How Sinkholes Work

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

Sinkholes are much more than holes in the ground. Learn how sinkholes can cause the Earth to swallow up you, your home and your car.

How Many Continents Are There? Depends Whom You Ask

history.howstuffworks.com/world-history/continents.htm

It may surprise you to know that experts around the world disagree on how many continents are out there. Here's why.

When will life on Earth end?

science.howstuffworks.com/life/evolution/life-on-earth-end.htm

Imagine a time in Earth's far-flung past when organisms didn't swim through the oceans or populate the lands. Even the mighty dinosaurs hadn't arisen. Will the planet ever return to that lifeless state?

How the Ancient Land Blob Gondwana Became Today's Continents

science.howstuffworks.com/environmental/earth/geology/gondwana.htm

Gondwana was a humongous landmass that persisted for 300 million years before it began to break up, forming all the continents in the modern Southern Hemisphere.

After-School Activities

lifestyle.howstuffworks.com/crafts/seasonal/after-school-activities.htm

After-school activities for kids engage kids in physical and educational play long. Try these after-school activities for kids.

The 9 Longest Rivers in the World: From the Nile to the Congo

science.howstuffworks.com/environmental/earth/geophysics/9-longest-rivers-in-world.htm

When it comes to rivers, longest doesn't necessarily mean biggest, and length can be difficult to determine, so the top spot will always be debated.

How do rescue teams search a flooded city?

science.howstuffworks.com/nature/climate-weather/storms/rescue-teams-search-flooded-city.htm

When a hurricane or flash flood strikes a city, it can leave residents stranded in their cars, homes or other buildings waiting for rescue. How do rescue teams know where to go first?

Exploring Mars: Insights Into the Red Planet

science.howstuffworks.com/mars.htm

Since the 1960s, we've been captivated by the planet Mars. How different is our neighbor, and what have we learned about the most explored planet?

How Urban Planning Works

science.howstuffworks.com/environmental/green-science/urban-planning.htm

Urban planning works to design a city so that it can be used effectively by its people. Find out more about how urban planning works.

How Archaeology Works

science.howstuffworks.com/environmental/earth/archaeology/archaeology.htm

Archaeology is the study of ancient civilizations and human remains, such as buildings, art or trash. Learn about archaeology and archaeologists.

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