when you have that fuel built up, it lifts the flames from the foreste loor up into thnopy. and once the flames get into the canopy, that's when you have that's when you have these big wildfires that kill people and destroy property and cause all this pollution. so we are inevitably looking at a future with more fires and more smoke. that's what the modeling shows us. we're expecting to see continued improvements in air quality from a continued shift to solar power and so forth but at the same time we are expecting to see worst impacts undrmining that progress from wildfires. >> sreenivasan: climate central senior science john upton. t >> this is bs newshour ekend," sunday. >> sreenivasan: when addressing climate change and sea level rise, coastal residents are on the frontlines. some are trying livies shorelo protect their land from erosion. florida resident jstnifer mcpeak led one on her property. "pbs newshour weekend" went to see hoit works. >> sreenivasan: mcpeak and her husband wanted what many of their neighbors had: a seawa they even started the process of getting a