
Some mummies are very old. Scientists can learn from mummies. Archaeologists study people of the past. They study mummies.
Photo Credit: Pool Photo/Alamy Stock Photo
A big hill makes sledding more fun. Gravity pulls you … read more
Blue whales have the biggest hearts of any animal. They … read more
Martin believed in peace. He fought hard for equal rights. … read more
© 2026 McGraw-Hill Education. All Rights Reserved.