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Brain membranes

Brain membranes

The brain and medulla spinalis are enclosed within three membranes. These are named from without inward: the dura mater, the arachnoid, and the pia mater. Continue reading Brain membranes

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The Triple Triumph of the Moon by Isaac Asimov

The moon made it possible for man to evolve and so exist.
The moon made it possible for him to develop mathematics and science.
The moon made it possible for him to transcend Earth and conquer space.

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THREE CHEERS FOR THE RED, GREEN, & BLUE!

Red, green, and blue are the colors that the first astronauts to Mars might plant there. The three colors were chosen recently by the Mars Society for its first Martian flag. The Mars Society is a group of scientists and laypeople whose goal is promoting the exploration and settlement of the Red Planet. Continue reading THREE CHEERS FOR THE RED, GREEN, & BLUE!