December

04/12/1784 Royal Bohemian Society of Sciences, the first public scientific society in Czech lands, established

06/12/1988 Intergovernmental Panel on Climate Change (IPCC) established

12/12/1902 * John A. Ratcliffe, author of the theory of radiowave propagation in the ionosphere (+ 25 November 1987)

12/12/2015 Paris Agreement adopted which aims to keep global warming to less than 2 °C above pre-industrial levels

17/12/1861 * Arthur E. Kennelly, who discovered ionospheric E layer (+ 18 June 1939)

17/12/1958 Czechoslovak Meteorological Society, predecessor of today's Czech Meteorological Society, established

18/12/1991 Launch of the MAGION 3 satellite

28/12/1898 * Carl-Gustaf A. Rossby, who discovered planetary Rossby waves (+ 19 August 1957)