National Oceanic and Atmospheric Administration - Great resource for teaching about the ocean and coasts, climate, weather and atmosphere, marine life, freshwater, and other related topics.
NASA Wavelength - "NASA Wavelength is your pathway into a digital collection of Earth and space science resources for educators of all levels – from elementary to college, to out-of-school programs. These resources, developed through funding of the NASA Science Mission Directorate (SMD), have undergone a peer-review process through which educators and scientists ensure the content is accurate and useful in an educational setting. Use NASA Wavelength to quickly and easily locate resources, connect them to other websites using atom feeds, and even share the resources you discover with others through social media and email." http://www.nasawavelength.org/about
Sparticl.org - "Sparticl is a new web and mobile service for teens, a collection of the very best the web has to offer in science, technology, engineering, and math or STEM. Sparticl includes answers to science questions, images, videos, games, and hands-on activities, all curated by a team of experts. But it's also a place where teens play a critical part – ranking content, sharing it, and recommending new content, all the while earning points and badges. Sparticl is created by the award-winning National Productions division of Twin Cities Public Television, and is made possible with the generous support of 3M. Sparticl is designed to be a showcase for the best STEM content, where organizations can promote their work and build their reputations. So we invite you to join us in this important effort to engage kids in science and engineering and help build the STEM workforce of tomorrow!". http://www.sparticl.org/AboutSparticl/