Insecticide, definition of

A global, three-dimensional computer model of the climate system; GCM's are highly complex and they represent the effects of such factors as reflective and absorptive properties of atmospheric water vapor, greenhouse gas concentrations, clouds, annual and daily solar heating, ocean temperatures and ice boundaries. The most recent GCM's include global representations of the atmosphere, oceans, and land surface.

They are often used to model the effects of human induced climate change into the future; but the accuracy of the models are highly dependent upon:

• The accuracy of the initial starting conditions;
• The accuracy of how the climatic processes are modeled, and;
• The accuracy of the assumptions made in the model construction.

• Canada moves to ban bee-killing pesticides
  Environmentalists scored a victory in Canada on Wednesday, securing restrictions on two pesticides that have been posing threats to bees and aquatic insects...
• EU approves complete ban on bee-killing insecticides
  In a monumental decision that has been years in the making, all member nations of the European Union have approved a total ban of neonicotinoids, the most widely used insecticide in the world and a well-documented danger to bees and other pollinators...
• Trump saved a toxic pesticide - and then it poisoned a bunch of farmworkers
  If President Donald Trump is waging a war on local farmworkers in California, he's winning. His Environmental Protection Agency (EPA) opened up the use of a pesticide called chlorpyrifos to agriculture in March, and then this month when at least 50 laborers...
• Millions of genetically modified mosquitoes may be released in Florida
    In an attempt to curb outbreaks of two devastating tropical diseases in the Florida Keys, the FDA is proposing the release of millions of genetically modified mosquitoes into the area...