PRESS REVIEW – Tuesday, October 6: The death of a researcher in Siberia, reportedly from the plague, sparks concern despite Russian authorities' denial. But first: French high school protesters are promising "Act 3" of their protest movement against learning conditions. Also, Le Monde speaks to the editor of Russian independent outlet Novaya Gazeta ahead of the 20th anniversary of the murder of investigative journalist Anna Politkovskaya. Finally, it appears that butter is back in fashion.