"Earth Day was established in 1970 at a time when social activism was at a high. U.S. senator Gaylord Nelson (D-Wis.), recognized a growing environmental concern that had barely been addressed by the legislature. In setting aside April 22 to recognize human impact on the environment, Nelson hoped first and foremost to raise the awareness of politicians.
Nelson certainly achieved his goal. More than 20 million Americans participated in this first Earth Day celebration, causing voter-hungry politicians to take notice. The overwhelming response helped generate a new political focus on the environment. As that focus has become increasingly global, more people than ever are celebrating Earth Day around the world.
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"Discover the fascinating science of the world around us with over 300 video clips.
Browse the categories, or enter a question or a keyword in the search box."
"Field Trip Earth is the global resource for teachers, students, and proponents of wildlife conservation.
Click on one of the field trip icons to begin your journey, or view a list of "
"The activities in this guide promote problem solving, communication skills and teamwork. Earth and space science subjects include lunar geology and regolith, distance to the moon, Apollo landing sites and life support systems. "
"This guide is not meant to be a comprehensive or scholarly introduction to the complex topic of the role of women in astronomy, but simply a resource for those educators and students who wish to explore the challenges and triumphs of women of the past and present. It's also an opportunity to get to know some of the key women who have overcome prejudice and exclusion to make significant contributions to our field. To be included among the representative women for whom we list individual resources, an astronomer must have had something non-technical about her life and work published in a popular-level journal or book. This explains why so many talented women are not covered; their work is mainly known through journals that students cannot read. Suggestions for additional non-technical listings are most welcome, however."