This Live Lesson is packed with interactive activities and ideas to get your class thinking about climate change. Hosted by ...

Add Yahoo as a preferred source to see more of our stories on Google. In the ’80s, a group of scientists and artists wanted to know if they could recreate Earth’s ecosystem, so they built Biosphere 2 ...

Earth Day, an occasion promoted by environmental organizations and advocates to raise awareness of conservation issues, is April 22. It’s an event that dates back to 1970. Teachers sometimes organize ...

Add Yahoo as a preferred source to see more of our stories on Google. Earth Day. In 1970, the first Earth Day sparked a massive public response, with 20 million Americans taking to streets and college ...

There has historically been tension and sometimes open hostility between those scientists engaged in detailed analytic work and scientists who study phenomena at larger scales. This is unfortunate, ...

The atmosphere’s concentration of carbon dioxide—a potent greenhouse gas—has been increasing in recent years faster than had been forecast by even the most extreme projections of a decade ago. At ...

In the ’80s, a group of scientists and artists wanted to know if they could recreate Earth’s ecosystem, so they built Biosphere 2 (Earth was known as Biosphere 1) in Oracle, Ariz. The experiment was ...