British PM Boris Johnson prorogues parliament, suspending it for 5 weeks to limit opposition to a no deal Brexit, prompting a furious backlash
Climate change activist Greta Thunberg arrives in New York after sailing across the Atlantic in an emissions-free voyage
- Discovery of 3.8-million-year-old skull of early human ancestor Australopithecus anamensis, found by Yohannes Haile-Selassie, at Miro Dora, Ethiopia, upends previous evolutionary theory published in journal "Nature"
- New Italian coalition government formed of anti-establishment Five Star Movement and center-left Democratic Party ousting Matteo Salvini
- US Senator Kirsten Gillibrand ends her campaign for president