I'm hardly more impressed with the current small crop of machines that fall into the category of sticking a laptop on a wheeled dress mannequin and calling it a robot. (discovermagazine.com)
Historical records (at least in Europe) clearly show that the Middle Ages was unusually warm, with long growing seasons and generally rich harvests (someone apparently forgot to tell Medieval farmers that they should have smaller crops in warmer weather). (climate-skeptic.com)
Captain Gary Burus has contended for 30 years that the spraying originated from smaller crop - dusters over all the cattle & pig yards, such as we had just north of Denver, until the creation of their International airfiasco. (geoengineeringwatch.org)