At the end of November, cooperation between Russian research institutes and the European Organization for Nuclear Research (CERN) based in Geneva will come to an end. This could have consequences for science, warns a German scientist. + Get the most important news from Switzerland in your inbox “Russia has strong expertise in engineering,” Beate Heinemann from the Deutsches Elektronen-Synchrotron (Desy) in Hamburg told the German Press Agency (dpa). “It's not that certain research will now become impossible due to the end of the collaboration, but it makes things more difficult and there could be delays.” Heinemann is Director of the Desy Particle Physics division. “We hope that there will be no major loss in the scientific yield,” the German CERN research director Joachim Mnich told dpa. Russian scientists had transferred their expertise to colleagues as far as possible. “We cannot continue to operate one detector component, but that is not a big gap,” said Mnich. In response to ...