The Mauna Loa atmospheric CO2 measurements constitute the longest continuous record of atmospheric CO2 concentrations available in the world. The Mauna Loa site is considered one of the most favorable locations for...
This webpage contains an applet that simulates the control of a Lunar Lander. The user is must touch down gently on the lunar surface. Key commands control the thrust and the orientation of the Lander. Extra points for...
This teacher's guide provides directions for building three-dimensional models from foam blocks to demonstrate plate tectonic principles, plate boundary interactions and the geometry and relative motions of faulting of...
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