A Grave Threat | Cosmos: A Spacetime Odyssey

once there was a man who went searching
for the true age of the earth in his
struggles to discover it he stumbled on
a grave threat
beautiful spring day Pasadena California
1966 business is booming life’s good
except for one man a geochemist named
Clair Patterson known as Pat he knows
that everyone he sees is in danger from
an invisible menace
and he’s determined to put a stop to it
no matter what the cost