Humans and Earth's Atmosphere: What's in the Air?
Nitrogen, oxygen, argon and carbon dioxide are all gases in Earth's atmosphere. But what happens when there is too much ... MoreHumans and Earth's Atmosphere: What's in the Air?
Humans and Our Planet Pack A of 4
Humans and Our Planet takes you from the edge of the atmosphere to the depths of inner Earth. The set explores how human... MoreHumans and Our Planet Pack A of 4
Humans and the Hydrosphere: Protecting Earth's Water Sources
The hydrosphere encompasses all water on Earth from glaciers and ice to rivers and oceans. People use water every day. T... MoreHumans and the Hydrosphere: Protecting Earth's Water Sources
Human Environmental Impact: How We Affect Earth
Pollution and mining for resources have negatively impacted Earth. Non-renewable resources will one day run out. Then wh... MoreHuman Environmental Impact: How We Affect Earth
Humans and Other Life on Earth: Sharing the Planet
Humans have influenced the world around them since they first walked on Earth. Hunting has impacted animal populations. ... MoreHumans and Other Life on Earth: Sharing the Planet
