I deem it a signal honour to have been asked to give this address during the celebration of the one hundred and fiftieth anniversary of your renowned Medical School, particularly as such emphasis is being given in your ceremonies to historical matters for, as you know, I have no claim whatever to be considered a medical historian. My only qualifications to talk on this matter are that I have sp...

The Arctic is particularly sensitive to climate change, but the independent effects of increasing atmospheric CO2 concentration (pCO2 ) and temperature on high-latitude forests are poorly understood. Here, we present a new, annually resolved record of stable carbon isotope (δ(13) C) data determined from Larix cajanderi tree cores collected from far northeastern Siberia in order to investigate t...