Powerlines in Medway, MA. (Jesse Costa/WBUR)

Massachusetts environmental politics and policies take center stage Thursday at Boston’s Museum of Science.

There, Republican Gov. Charlie Baker and Democratic nominee Jay Gonzalez will take turns discussing their environmental records and plans for the state’s future.

The forum takes place four years after Baker, who was then running for his first term, pledged to increase environmental spending in Massachusetts.

“I committed a long time ago to getting to 1 percent of the budget again with respect to the state’s environmental agencies,” he said then, adding he was surprised and disappointed to learn that the last time 1 percent of the budget went to fund environmental issues was when he served in Gov. William Weld’s administration in the 1990s.

“While it may not happen immediately,” Baker said four years ago, “I can promise you we’ll get there over the course of my administration.”

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