Nature A study published in Nature finds the Earth's surface is warmer than it has been in about 120,000 years, and is locked into eventually hitting its hottest mark in more than 2 million years.
SpaceX SpaceX successfully tests its most powerful rocket to date. The company's goal will be to use the Raptor (rocket engine) to power their "super-heavy" Interplanetary Transport System in facilitation of the colonization of Mars and beyond.
Indian Space Research Organisation The Indian Space Research Organisation (ISRO) launches cyclone detection satellite SCATSAT-1, and seven other satellites into orbit from the Satish Dhawan Space Centre in Sriharikota. The launch successfully demonstrates the Polar Satellite Launch Vehicle's capability of placing satellites in multiple orbits in a single launch.
Italian constitutional referendum, 2016 The Italian cabinet sets a constitutional reform vote for December 4.
In 2016 Democratic Party nominee Hillary Clinton and Republican Party nominee Donald Trump hold the first presidential debate of the 2016 presidential election at Hofstra University in Hempstead, New York.
Houston A gunman opens fire at a Houston shopping center and injures nine people. Responding police kill the shooter afterwards.
Canada–Iran relations Iran releases Canadian-Iranian sociocultural anthropologist Homa Hoodfar, who had been held since June, as the countries begin talks on restoration of diplomatic ties.
2016 Pacific typhoon season Taiwan braces for the potential impact of Typhoon Megi which is strengthening as it approaches the island.
Colombian conflict Colombian President Juan Manuel Santos and FARC guerrilla leader Rodrigo Londoño, also known as Timochenko, sign a peace accord in Cartagena, ending the longest running armed conflict in the Western Hemisphere. The final agreement will be submitted to popular ratification in a referendum on October 2.