EUCLID, Ohio — It's been a wet few weeks in Northeast Ohio, so naturally, the growth of grass is a little out of control. "There's a lot of elderly, a lot of shut-ins, a lot of disabled that can ...

1 Woolcock Institute of Medical Research (Royal Prince Alfred Hospital and University of Sydney), P O Box M77, Camperdown, NSW 2050, Australia 2 Royal Prince Alfred Hospital, Camperdown, NSW 2050, ...