One recent phenomena is the editorial bias against publication of scientific papers that go against the conventional wisdom regarding the global warming hypothesis and "climate change." Scientists who are activists and ambitious politicians have conspired to prevent dissimination of information that does not support the catastrophic climate change scenario. Here is an excellent article that discusses the editorial bias situation. (Note this was written before the Earth's average suddenly dropped over the last year, and people like Kelly Emanuel changed their opinion regarding the impact of global warming, assuming it even exists.)

http://www.staff.livjm.ac.uk/spsbpeis/Editorial-bias.htm