Before digital microscopes, scientists hired artists to draw the things visible in the microscope. Through training in neuroscience and art, Cajal revolutionized the way we view the beautiful brain. The third lesson in a series of four...

Shock your physical science class using this video to teach the basics of static electricity. Electricity is defined,and electrons are differentiated from protons on an atom model. The use of hydropower and wind are explained as ways of...