PHILADELPHIA — In early April, Doug Mastriano was recording a Facebook Live video on his phone after a legislative session in Harrisburg when he segued into his thoughts on global warming.
The state senator from south-central Pennsylvania, who would become the Republican nominee for governor the following month, told his supporters he wanted to pull the state out of a program to reduce greenhouse gas emissions, calling it "nonsense" that human activity could significantly alter the earth's climate.
A connection between burning fossil fuels and global warming? Merely a "theory," Mastriano said, based on "pop science."
