Zack Shellenberger, 14, center, and Nicole Greer, 13, right, try to keep their attention focused on Dr. Richard Stack, from Mercy Sleep Center, at Will Rogers Middle School in 2006.
Zack Shellenberger, 14, center, and Nicole Greer, 13, right, try to keep their attention focused on Dr. Richard Stack, from Mercy Sleep Center, at Will Rogers Middle School in 2006. Lezlie Sterling Sacramento Bee Staff Photo
Zack Shellenberger, 14, center, and Nicole Greer, 13, right, try to keep their attention focused on Dr. Richard Stack, from Mercy Sleep Center, at Will Rogers Middle School in 2006. Lezlie Sterling Sacramento Bee Staff Photo

Human-induced climate change, like a sun-centered solar system, is a scientific fact

August 05, 2017 06:00 AM

UPDATED August 05, 2017 06:00 AM

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