Attribution Non-commercial No Derivatives (by-nc-nd)
No Advisories - program content screened and verified.
"Legend has it that watching an apple drop from a tree gave Isaac Newton an insight into gravity that was a major contribution to a change of worldview in the West. No longer was the earth below and heaven above. Instead, the earth became one of many moving bodies in a big glorious universe where moons and planets and stars and falling apples all obey the same laws. Laws like gravity. ... "
Music by Kevin MacLeod
Date-stamped 8-23-12, but material is not date-specific