Nature reserves Scientists studying flying insects in nature reserves and protected areas of western Germany report a decline of more than 75% of the population in about three decades.
New Zealand general election, 2017 New Zealand First leader Winston Peters chooses to create a minority coalition with the Labour Party and form the sixth Labour government.
2017 Spanish constitutional crisis Rajoy announces that he will begin the process of stripping Catalonia of its autonomy starting on October 21. This follows a letter Puigdemont wrote before the deadline again asking for dialogue, and blaming Rajoy for escalating the crisis. Rajoy had wanted dialogue after reassurances that the independence bid was dropped.
Spanish Prime Minister Mariano Rajoy warns Catalonian President Carles Puigdemont that the region's autonomy will be suspended if he fails to drop the Catalonian government's bid for secession by 10:00 a.m. CEST (08:00 a.m. GMT).
Crime in Florida Two people are arrested and five people suffer minor injuries at the University of Florida during protests of Richard B. Spencer's speech at an event there.
2017 Tongo Tongo ambush The United States Africa Command sends a team to Niger to investigate an October 4 ambush which killed four U.S. soldiers.
War in Afghanistan At least 43 Afghan soldiers are killed in a Taliban attack on an army base in Kandahar Province. Around 10 Taliban fighters also died in the attack.