With heat waves driven by global warming pounding parts of the western United States this summer, environmental journalists mustn’t overlook the toll on especially vulnerable populations, among them disadvantaged groups, the elderly, those in low-income housing and more. The latest Issue Backgrounder helps reporters understand heat’s health effects, track heat-vulnerable populations and clarifies how communities can prepare and prevent the worst public health impacts.

A reporting team at BuzzFeed used a powerful array of data analysis techniques to arrive at a disturbing conclusion about the wintery devastation in Texas — there were far more deaths than acknowledged. But their investigation didn’t stop there. They tracked down families of the deceased to understand the human toll and pressured government over its accountability. How they got the story for “The Graveyard Doesn’t Lie.”

Urban tree cover is no luxury, but rather an important environmental and public health necessity. And for years the lack of urban trees has harmed socioeconomically disadvantaged neighborhoods. To help report on tree cover in U.S. urban areas — and to track it against environmental justice measures — the latest Reporter’s Toolbox spotlights an extensive tree equity scoring database.