World

2018

January
February
March
April
May
June
July
August
September

2 – A fire destroys the National Museum of Brazil in Rio de Janeiro
6 – The Supreme Court of India decriminalises homosexuality
22 – An attack at a military parade kills at least 29 people in Ahvaz, Iran
28 – A magnitude 7.5 earthquake hits Sulawesi, Indonesia, causing a tsunami that kills at least 2,256 people and injures more than 10,679 others

October

October 2 – Washington Post journalist Jamal Khashoggi is murdered inside the Saudi consulate in Istanbul, triggering a diplomatic crisis for Saudi Arabia.^[102]
October 8 – The IPCC releases its Special Report on Global Warming of 1.5ºC, warning that "rapid, far-reaching and unprecedented changes in all aspects of society" are needed to ensure that global warming is kept below 1.5 °C.^[103]
October 10 – Hurricane Michael makes landfall at Mexico Beach, Florida, with winds of 155 mph and a minimum pressure of 919 mbar. It is the most intense hurricane to hit the mainland United States since Camille in 1969.^[104]
October 16 – Canada legalises the sale and use of cannabis, becoming the second country in the world to do so, after Uruguay in 2013.^[105]
October 19
- At least 59 people are killed and at least 100 injured when a train runs through a crowd at a Hindu festival in Punjab, India.^[106]
- The unmanned European-Japanese spacecraft BepiColombo is launched on a seven-year journey to Mercury.^[107]
October 20
- 700,000 people march through central London demanding a second referendum on the final Brexit deal.^[108] The event is the second most attended protest of the 21st century in the United Kingdom after the "Stop the War" anti-Iraq War march in 2003.^[109]
October 23 – The Hong Kong–Zhuhai–Macau Bridge, the world's longest sea crossing bridge, is opened by Chinese President Xi Jinping.^[111]
October 27 Michael D. Higgins is officially declared President of Ireland after receiving 822,566 first preference votes.^[112]
October 28 – The far-right Jair Bolsonaro is elected as the next President of Brazil, with 55% of the vote.^[113]^[114]
October 29 – Lion Air Flight 610 crashes off the coast of Java, with 189 passengers on board.^[115]
October 30 – NASA's Kepler mission ends after the spacecraft runs out of fuel.^[116]