The used lunch trays Emily Fox took home about four years ago from the loading dock outside her elementary school were gross, some still plastered with ketchup. Emily stacked the trays in piles of 10.

Lunch items in the Los Angeles Unified School District have been in flux in recent years — for example, swapping pizza for whole-grain spaghetti — but the sagging plastic foam tray that carried the ...

A UF researcher and two Flagler County educators, along with their students, sparked a green initiative to usher in recyclable paper lunch trays into the county’s school cafeterias. The ...