Alarmism, based upon conclusions not proved by the facts, scientific research, and analysis of the documented observations. Very often employed to gain cheap popularity among gullible people with limited education, and to increase the profit of the proponent.
I call it the algoreshit when:
1) The periodical climate fluctuations - and particularly, the alleged "global warming" effect - are presented and explained as a result of the human activities producing excessive amounts of the carbon dioxide, as opposed to the volcanic, cosmic, and other NATURAL sources of any global changes.
2) Anybody asserts that any global changes mentioned above could be REVERSED by cutting the production of carbon dioxide (which in reality is the "food" for plants.)