|Photo Creative Commons|
Most of the livestock which provide us with our meat, dairy and eggs are fed maize, soya and cotton seed. Most of these three crops are liberally sprayed with glyphosate because they've been genetically transformed to accumulate this weedkiller.
Livestock aren't the only animals eating GM crops. Bees can forage over several miles, and monocultures of GM maize, soya, cotton, and oilseed rape in flower provide a bees' banquet. Hardly surprising then that American honey is ubiquitously contaminated with the herbicide.