The fossil fuels that power today's world are a limited resource. Luckily, scientists and engineers are developing many alternative energy sources to take their place. With clear text, vivid…

In August 1945, the US government dropped two atomic bombs on Japan to end World War II. The bombings forced Japan to surrender, but they left a complicated legacy. Survivors, soldiers,…

Scientists estimate that thousands of species are going extinct every year. Such a loss of species can have devastating effects on local ecosystems and food chains. However, conservationists…

Animals can help us see the effects of climate change, pollution, and habitat destruction. Bioindicator Species takes the pulse of animals already threatened by human action in order to…

Engineers have been creating amazing structures for thousands of years. From the wonders of the ancient world to today's high-tech stadiums, they have applied science and technology to design

Engineers have been creating amazing structures for thousands of years. From the wonders of the ancient world to the International Space Station, they have applied science and technology to…

Earth's climate is changing. People are adding greenhouse gases to the atmosphere. As a result, Earth is getting warmer. Storms are becoming more severe. Animals are struggling to find food…

In late 2019, health officials noticed a new disease spreading in Wuhan, China. They named it COVID-19. Within a few months, it became a pandemic that dramatically changed life for nearly…

Racism is a problem deeply rooted in American society. Slavery and segregation may no longer be legal, but their legacies still influence the way Black people and other people of color are…

Explore the United States.

Throughout human history, people have been battling illnesses. Smallpox spread through cities in ancient times. The bubonic plague in the Middle Ages killed millions around the world. The…

Boost young readers' understanding of world ecosystems with this appealing series. Each book introduces a type of ecosystem, including its climate, plants, and animals. Also explored are how…