Why some plant diseases thrive in urban environments

Rachel Penczykowski, an assistant professor of biology in Arts & Sciences at Washington University in St. Louis, and five WashU graduate and undergraduate students tracked infestations of powdery mildew on common broadleaf ...

Summer in the city: Climate science reveals the impacts of heat

The summer sun beats down. People without air conditioning must find refuge in schools and community centers. Outdoor workers struggle to keep cool. Hot nights interrupt people's sleep, not allowing them to get the rest needed ...