limit search results to documents authored or funded by the government by using:
site:.gov (documents produced/authored by the government at all levels (federal,state,local) and government-sponsored research)
site:org (organizations/associations / think tanks...)
site:edu (produced / authored / sponsored by educational entities)
food waste composting site:gov
"community garden" regulations site:.gov
"ecosystem services" economics site:.gov
rainwater harvest* site:.gov
"job corps" site:org
Place phrases in quotes
"ecosystem services"
"public health"
