Can you catch the same cold twice? Elementary and middle schoolers learn about what happens when a virus attacks their bodies, and how the immune system never forgets a virus, with an entertaining comic book. The packet includes...

This interesting site focuses on unusual microbes that inhabit an extreme environmental niche on our planet. Individual articles are written in a tone suitable for general audience.

The climate where you live is called regional climate. Global climate is a description of the climate of a planet as a whole, with all the regional differences averaged. Includes links to additional resources on climate and climate change.

Take a journey to the center of the Earth and learn about the structure, material properties, and conditions inside our planet.