© 2026 McGraw-Hill Education. All Rights Reserved.
A migration is the seasonal movement of a group of animals from one place to another. Which animal holds the record for longest migration? The arctic tern. These birds have a wingspan of about 75 … Read more
Every October almost a million visitors arrive in Albuquerque, New Mexico. They come to pilot hot-air balloons, ride in balloons, or just watch balloons soar through the air. This year, the Albuquerque International Balloon Fiesta … Read more
Arches National Park has over 2,000 stone arches. These were molded naturally over millions of years. Underground, layers of sandstone formed on top of salt. As more stone formed, some was pushed up into a … Read more
You may have heard or read about El Niño in a weather report. Meteorologists, scientists who study and predict the weather, talk about how this phenomenon will affect weather in different places. Some areas may … Read more
On August 26, 2026, a massive flood occurred on the border of Nepal and Tibet. Many villages were buried under mud and debris [waste or parts of material that are broken or left over]. Seventy … Read more
Can the paint on the outside of a house help keep the house cool in hot weather? Yes. Some types of paint have ingredients (materials used to make something) that reflect (to bounce back from … Read more
© 2026 McGraw-Hill Education. All Rights Reserved.