What do you think of when you hear the word treasure?
Treasure might be jewelry or art. It might be metals like gold or silver. These objects might be very old.
Some treasure is kept in museums. Some has been lost over time. This means it is still waiting to be discovered!
Photo Credit: Fer Gregory
World leaders gathered in Glasgow, Scotland, in early November. The countries wanted to find new ways to make the Earth’s climate better. In 2015, many world leaders signed the “Paris Agreement.” They agreed to cut … Read more
What Is Nitrogen Dioxide? You can’t see nitrogen dioxide. It’s a gas made by cars, trucks, buses, power plants, and factories. Too much nitrogen dioxide causes smog and acid rain. It can make people sick, too. Nitrogen dioxide is partly to blame for … Read more
On September 11, 2001, the United States suffered its worst terrorist attack. Members of a terrorist group called al-Qaeda hijacked three airplanes. They crashed the planes into the Pentagon outside of Washington, D.C., and the … Read more
© 2025 McGraw-Hill Education. All Rights Reserved.
