Posted on Leave a comment

Liquid

one of the three commonly recognized states in which matter occurs, i.e., that state, as distinguished from solid and gas, in which a substance has a definite volume but no definite shape.    1
 

Continue reading Liquid

Posted on Leave a comment

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

Posted on Leave a comment

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.