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Hagermania - Scientist and Magician.
Weather Wiz Kids - Storms explained by Crystal Wicker, a meteorologist. 
NASA - governement site. Includes streaming feed to NASA TV and lots of video to watch. 
Tsunami!
The Department of Earth and Space Sciences
hosts this site out of the University of Washington.
Hawaiian Volcano Observatory
Read about Kilauea and Mauna Loa, earthquakes and volcanoes on the Hawaiian Islands.
Kidstorm
Get pictures and graphics of tornadoes, lightning, hurricanes and storm chasing.
DNA Tube
DnaTube is a scientific site providing video based studies, lecturers and seminars.
Trees - From Kidzone. Learn all about the different parts of a tree.
Arbor Day Foundation - Learn about the Life of a Tree
Tree Facts- Facts on trees from Science Kids.
Climate Zone   
Facts on world climates.
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NASA - Interactive Guide to the Solar System
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Interactive Solar System
Click your way through the solar system in 3D.  Rotate a planet to see all sides and its' relationship to the rest of the planets.  Shown in real time, but you can fast forward through the day.  
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Jungle Jeopardy from PBS - an ecosystem game.
Zooniverse - Be a volunteer researcher and help solve real world problems.
NASA: Global Change Master  
Facts on Earth Sciences.
Environmental Protection Agency
Facts on the environment for students.
Ask-An-Earth-Scientist
Have a question on earthquakes and volcanoes?  The scientists working at the Department of Geology and Geophysics at the University of Hawaii can probably answer it for you.
Science News for Kids
Great articles for intermediate students on science topics._
Staying Safe Outdoors in Severe Weather 
​A special note of thanks to Ms Fox and her helper Alex for finding this site with links to many government sites on weather and weather preparedness. 
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Mystery Doug - Doug answers questions from real kids. Watch every week to learn more about all things Science.
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Read interesting nonfiction about all different science topics at Wonderopolis.  Enjoy the changing "Wonder of the Day" and watch short videos that answer your questionsl
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Science for Kids - Fun experiments, games, facts, quizzes.
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Little Alchemy - Game that combines elements to see what results.
NASA: Planetary Sciences   
Facts and information on the planets.
PBS online presents Savage Earth
Includes information on earthquakes, volcanoes, tsunamis, the ring of fire, and more.
Alfred Wegner
PBS explains Alfred  Wegner and his theory of continental drift.
Department of Energy
Information on geothermal energy includes the Ring of Fire.
NGSS - Next Generation Science Standards (for teachers).