Life NASA announces the discovery of preserved organic matter in an ancient lake bed on Mars by its Curiosity rover. It has not been determined if the matter was potentially related to past life on Mars or not.
Spain Spanish King Felipe VI swears in the cabinet of Prime Minister Pedro Sánchez. It is the first cabinet in European history, and the only in the world, to be composed primarily of women.
Ontario general election, 2018 Ontario Green Party has their first ever MPP elected. Mike Schreiner is elected in Guelph district in southwestern Ontario.
Ontario New Democratic Party wins 40 seats, becoming Official Opposition for the first time since the 1987 election.
The Progressive Conservative Party of Doug Ford wins a sweeping victory, ending 15 years of Liberal Party rule in the province. The Liberal Party becomes a minority party (or third party) for the first time since its foundation and later first provincial election, has losing official party status.
Canada Canadian prime minister Justin Trudeau is accused of groping a journalist in 2000. He denies he made negative interactions.
2018 North Korea–United States summit Two South Korean media personnel from KBS News are arrested for trespassing the home of a North Korean envoy in Singapore.
Abortion in the United Kingdom The Supreme Court of the UK dismisses a legal challenge by the Northern Ireland Human Rights Commission of the restrictive Northern Ireland abortion laws, as the court has no jurisdiction in this specific case. Four of seven judges note that these laws are incompatible with the European Convention on Human Rights "in prohibiting abortion in cases of rape and incest and fatal foetal abnormality", a matter of right to respect for private and family life guaranteed by the Convention.
2018 North Korea–United States summit Donald Trump says that he might invite North Korean leader Kim Jong-un to the United States if the planned summit meeting in Singapore goes well.
Japan–United States relations Donald Trump and Shinzō Abe discuss improving trade relations between the two countries.
IKEA IKEA announces that it plans to phase out single-use plastic items by 2020, and intends to move toward sustainability in its product design.
The economy House of Fraser announces that it intends to close 31 of its 59 stores, including its flagship store on London's Oxford Street.