Portal:Current events/2018 October 20

• Four U.S. tourists are killed in Costa Rica after a rafting accident on a swollen river. (BBC)

• Russia–United States relations
  • U.S. President Donald Trump says that the United States will withdraw from the Intermediate-Range Nuclear Forces Treaty, a 1987 nuclear arms treaty with Russia. (The Guardian)

• Religious violence in Nigeria
  • A spat in a market in Nigeria's northern Kaduna State results in 55 dead. After the brawl, 22 people were arrested. (BBC)
• Tanzanian billionaire Mohammed Dewji is freed by his captors nine days after being seized by unknown gunmen. (CNN) (Quartz)
• 2018 Sagay, Negros Occidental hacienda massacre
  • Unidentified armed men shoot and kill nine sugarcane farmers in Sagay, Negros Occidental, Philippines. (Philippine Daily Inquirer)
• The number of remains of babies, fetuses found stashed in Detroit funeral home rises to now more than 60. (Reuters)

• Afghan parliamentary election, 2018
  • After a delay of three years, voters in Afghanistan head to the polls to elect members of the nation's parliament. The election is marred by violence and suicide attacks which leave over 170 dead or wounded nationwide. (Deutsche Welle)
  • Because of technical issues in some constituencies, voting was extended until Sunday. Additionally, voting in the Kandahar Province will be delayed by one week following the assassination of police commander Abdul Raziq Achakzai two days prior. (Reuters) (Gandhara)
• Wentworth by-election, 2018
  • Independent candidate Kerryn Phelps leads the vote count in the Australian House of Representatives seat of Wentworth. If she wins, the Australian House of Representatives will enter into a hung parliament. (The Sydney Morning Herald)
• Opposition to Brexit in the United Kingdom
  • More than 600,000 people gather at Parliament Square in London as protesters from the People's Vote campaign call for a second Brexit referendum deal between the United Kingdom and the European Union. (BBC) (Time)

• The skull of the Luzia Woman, one of the oldest known human fossils from the Americas, is recovered from the remains of the National Museum of Brazil. The museum staff states that the museum intends to attempt to restore the fossil. (BBC)
• A research study published in The New England Journal of Medicine describes a significant mortality response to the immunotherapy Atezolizumab used in conjunction with the chemotherapy nab-paclitaxel for a type of untreatable Breast cancer (Triple-negative) when the tumors also display programmed death ligand 1 (PD-L1) expression. (The New York Times),(The New England Journal of Medicine)

• 2018 Major League Baseball season
  • The Los Angeles Dodgers return to the World Series after a 5–1 victory against the Milwaukee Brewers in game 7 of the National League Championship Series. (The Los Angeles Times)