Parents struggling to pack school lunches kids want to eat may find a very nearby source of help — their own kids. (thespruce.com)
Codigestion feedstocks can be collected from other nearby sources including restaurant or cafeteria food wastes; food processing wastes or byproducts; fats, oil and grease from restaurant grease traps; energy crops; crop residues; and others. (epa.gov)
Scientists have previously studied black carbon in areas with obvious nearby sources (such as a coal mine in Svalbard, Norway), but less is known about its complex interactions in snow - covered areas further removed from human impact. (sciencedaily.com)