Contributed by Lawre Stone / Lisa Sanditz paints landscapes that explore collisions between industry and the natural world. She has also addressed manufacturing hubs, industrial farms, and junk-food factories. In her solo show “Missing Mountain” at Alexandre, Sanditz turns to the impact of climate change on the Catskill Mountains, and with good reason. In the summer of 2023, the jet stream carried smoke from fossil-fuel-driven Canadian wildfires into the Hudson River Valley, turning the sky a dusty gray, dimming the sun to a hazy orange disk, and impeding views with airborne particles. Sanditz’s consternation inspired the three paintings that anchor this exhibition.