Products Seawater 234U/238U recorded by modern and fossil corals 12434 How paleofire research can better inform ecosystem management 12433 Decadal Climate Variability and Predictability: Challenges and Opportunities 12446 A short story of the struggle to get long records of air temperature in Toruń, Central Poland 12427 Arctic hydroclimate variability during the last 2000 years: current understanding and research challenges 12426