Mario Molina was a Mexican chemist who discovered that man-made chlorofluorocarbons (CFCs) were damaging the ozone layer. He was born in 1943 in Mexico City and died at age 70. Molina published findings in 1978 with Sherwood Rowland showing that CFCs were depleting the ozone layer. For this pioneering environmental work, Molina received numerous honors including the Presidential Medal of Freedom and the Nobel Prize in Chemistry.

1. Mario Molina
Brandon Vindel
English per.2
December 13,2013

2. Assertion
• Mario Molina was a
significant scientist
because he
discovered manmade compounds
effecting Earth’s
upper atmosphere
and on the ozone
layer.

3. Biography
• Mario Molina was born in Mexico City,
Mexico
• He died at age 70
• He was born March 19,1943

4. Evidence # 1
• “Mario Molina won the award ‘Tyler Price
for Environmental Achievement.”

5. Explanation #1
• Most governments are trying to prevent
CFC emissions to save the ozone layer.
Everyone heard about CFCs and their
impact on the ozone layer in 1978 when
M.Molina and S.Rowland published their
findings.

6. Evidence #2
• “On August 8,2013 president Barack
Obama announced Molina as a recipient
of the ‘Presidential Medal of Freedom.”

7. Explanation #2
• Mario Molina is a visionary chemist and
environmental scientist.

8. Evidence #3
• “Mario J. Molina later has won the ‘Nobel
Prize in Chemistry.”

9. Explanation #3
• He discovered how chlorofluorocarbons
deplete the ozone layer.

10. Conlusion
• Mario J. Molina is best known for the
discoveries on man-made compounds
[chlorofluorocarbons] affecting the ozone
layer