A New Hypothesis Regarding the Ridges and Grooves on Jupiter’s Moon Europa

Jupiter's moon Europa is covered with grooves and ridges. The common hypothesis is that the crust of Europa is composed of thick sheets of ice which float on a liquid water layer deeper in the satellite. As these plates of ice move around, ridges and cracks form. NASA/Astronomy Picture of the Day This is a …

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Science textbooks stink (for the most part)

The middle school science textbooks we have been using for many years at BCA are old and worn, so it is time for a textbook search. Being that I cannot go to the National Science Teachers Association convention, I'm looking online for replacement textbooks. One of the first things I found was an article from …

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