Complex sentence: Baliunas earlier adopted a skeptical position regarding the hypothesis that CFCs were damaging to the ozone layer, which earned its originators, Paul Crutzen, Mario Molina and Frank Sherwood Rowland, the Nobel Prize for Chemistry in 1995.
Split into simpler sentences: Baliunas earlier adopted a skeptical position regarding the hypothesis that CFCs were damaging to the ozone layer. The originators of the hypothesis, Paul Crutzen, Mario Molina and Frank Sherwood Rowland, were awarded the Nobel Prize for Chemistry in 1995.