(FILES) This combo created on July 14, 2016 from file photos shows the logo of German pharmaceutical giant Bayer (top, on July 24, 2013 in Berlin) and a building on the campus of Monsanto Headquarters (on May 23, 2016 in St Louis, Missouri). German chemicals giant Bayer may launch a hostile takeover bid for US seed and pesticide maker Monsanto if its latest friendly offer falls through, business daily Handelsblatt reported on August 16, 2016. / AFP PHOTO / John MACDOUGALL AND Michael B. ThomasJOHN MACDOUGALL,MICHAEL B. THOMAS/AFP/Getty Images

Demonstrators from rail trade unions hold placards as commuters stream by during a protest against rail fare increases at London Bridge station in London on August 16, 2016. Encumbent Labour leader currently being challenged in a leadership contest, Corbyn, joined trade union campaigners at the busy Lonon Bridge railway station to call for fares to be cut and the railways to be nationalised on the day that the government announced that regulated rail fares in England, Wales and Scotland will rise by 1.9% in 2017. / AFP PHOTO / JUSTIN TALLISJUSTIN TALLIS/AFP/Getty Images

Demonstrators from rail trade unions hold placards as commuters stream by during a protest against rail fare increases at London Bridge station in London on August 16, 2016. Encumbent Labour leader currently being challenged in a leadership contest, Corbyn, joined trade union campaigners at the busy Lonon Bridge railway station to call for fares to be cut and the railways to be nationalised on the day that the government announced that regulated rail fares in England, Wales and Scotland will rise by 1.9% in 2017. / AFP PHOTO / JUSTIN TALLISJUSTIN TALLIS/AFP/Getty Images

Demonstrators from rail trade unions hold placards as commuters stream by during a protest against rail fare increases at London Bridge station in London on August 16, 2016. Encumbent Labour leader currently being challenged in a leadership contest, Corbyn, joined trade union campaigners at the busy Lonon Bridge railway station to call for fares to be cut and the railways to be nationalised on the day that the government announced that regulated rail fares in England, Wales and Scotland will rise by 1.9% in 2017. / AFP PHOTO / JUSTIN TALLISJUSTIN TALLIS/AFP/Getty Images

Britain's opposition Labour Party leader Jeremy Corbyn leaves after joining a protest against rail fare increases and to call for the railways to be re-nationalised at London Bridge station in London on August 16, 2016. Encumbent Labour leader currently being challenged in a leadership contest, Corbyn, joined trade union campaigners at the busy Lonon Bridge railway station to call for fares to be cut and the railways to be nationalised on the day that the government announced that regulated rail fares in England, Wales and Scotland will rise by 1.9% in 2017. / AFP PHOTO / JUSTIN TALLISJUSTIN TALLIS/AFP/Getty Images

Britain's opposition Labour Party leader Jeremy Corbyn joins rail trade union representatives to protest against rail fare increases and to call for the railways to be re-nationalised at London Bridge station in London on August 16, 2016. Encumbent Labour leader currently being challenged in a leadership contest, Corbyn, joined trade union campaigners at the busy Lonon Bridge railway station to call for fares to be cut and the railways to be nationalised on the day that the government announced that regulated rail fares in England, Wales and Scotland will rise by 1.9% in 2017. / AFP PHOTO / JUSTIN TALLISJUSTIN TALLIS/AFP/Getty Images

Britain's opposition Labour Party leader Jeremy Corbyn (7R) joins rail trade union representatives to protest against rail fare increases and to call for the railways to be re-nationalised at London Bridge station in London on August 16, 2016. Encumbent Labour leader currently being challenged in a leadership contest, Corbyn, joined trade union campaigners at the busy Lonon Bridge railway station to call for fares to be cut and the railways to be nationalised on the day that the government announced that regulated rail fares in England, Wales and Scotland will rise by 1.9% in 2017. / AFP PHOTO / JUSTIN TALLISJUSTIN TALLIS/AFP/Getty Images

Britain's opposition Labour Party leader Jeremy Corbyn (5R) joins rail trade unions to protest against rail fare increases and to call for the railways to be re-nationalised at London Bridge station in London on August 16, 2016. Encumbent Labour leader currently being challenged in a leadership contest, Corbyn, joined trade union campaigners at the busy Lonon Bridge railway station to call for fares to be cut and the railways to be nationalised on the day that the government announced that regulated rail fares in England, Wales and Scotland will rise by 1.9% in 2017. / AFP PHOTO / JUSTIN TALLISJUSTIN TALLIS/AFP/Getty Images