M.J. Khan, the president of the Islamic Society of Greater Houston, who spent a sleepless night monitoring relief efforts, tells us what Houston’s residents are doing to help each other.

Also: experts weigh in on how Houston can plan for future flooding events; a brewer in Amsterdam turns rain into beer; an activist vows to keep the Marshall Islands from disappearing beneath rising seas; we learn if climate change is behind extreme hurricanes; plus a port city in Maine revitalizes its economy by shipping pregnant cows to Turkey