But how do we ensure everyone has equal access to shade? Tucson, where heatwave mortality has soared, shows a path forward.

Climate change, drought, and fires — all caused or worsened by human activity — are rewriting the future of ancient Sonoran saguaros.

Our culture has moved away from a fascination with the greenery around us. Experts warn that “plant blindness” could come with a cost.

As funding drops and institutions change, the study of plants appears to be withering on the vine. That’s letting critical skills go extinct.

A single Franciscan manzanita plant nicknamed Francie, the last of its kind from the wild, charts an unlikely comeback in San Francisco.