These projects included industrial plant relocation or closure, furnace replacement, introduction of new emission standards, and more strict traffic control.

[12][13] In September 2024, the IOC revealed its list of candidates for the presidency, featuring Sebastian Coe, David Lappartient, Kirsty Coventry, and Juan Antonio Samaranch Salisachs among the seven contenders.

[14][15] In February 2025, the IOC announced the inaugural Olympic Esports Games would take place in 2027 in Riyadh, the capital city of Saudi Arabia.

The IOC will collaborate with the Esports World Cup Foundation (EWCF) to produce the event, which President Thomas Bach called "historic".

[28] Brundage's resistance to this revenue stream left IOC organising committees to negotiate their own sponsorship contracts and use the Olympic symbols.

Black carbon is released into the air from incomplete combustion of carbonaceous fluids, contributing to climate change and injuring human health.

Air quality improvement measures implemented by the Beijing government included replacing coal with natural gas, suspending construction, imposing strict dust control on construction sites, closing or relocating the polluting industrial plants, building long subway lines, using cleaner fluid in power plants, and reducing the activity by some of the polluting factories.

The Soviet Union entered teams of athletes who were all nominally students, soldiers, or working in a profession, but many of whom were paid by the state to train on a full-time basis.

[53] The decision was reversed in January 1970 after Brundage declared that the change would put ice hockey's status as an Olympic sport in jeopardy.

[56][57] Denver officially withdrew on 15 November: the IOC then offered the Games to Whistler, British Columbia, Canada, but they too declined due to a change of government following elections.

[62] After the city won the 2008 Summer Olympic Games, Amnesty International and others expressed concerns regarding the human rights situation.

[67] Gibson then reported that a €1.3m (£1m, $1.5m) payment from the Tokyo Olympic Committee team to an account linked to Papa Diack was made during Japan's successful race to host the 2020 Summer Games.

[68] The following day, French prosecutors confirmed they were investigating allegations of "corruption and money laundering" of more than $2m in suspicious payments made by the Tokyo 2020 Olympic bid committee to a secret bank account linked to Diack.

[79] Verifying the sex of Olympic participants dates back to ancient Greece, when Kallipateira attempted to break Greek law by dressing as a man to enter the arena as a trainer.

[82] In 1966, IOC implemented a compulsory sex verification process that took effect at the 1968 Winter Olympics where a lottery system was used to determine who would be inspected with a Barr body test.

This was due to the belief that higher testosterone levels increased athletic ability and gave unfair advantages to intersex and transgender competitors.

[79][84][85] The most notable cases of bans testing results are: Maria José Martínez-Patiño (1985),[86] Santhi Soundarajan (2006),[86] Caster Semenya (2009),[79] Annet Negesa (2012),[87] and Dutee Chand (2014).

[83] Before the 2014 Asian Games, Indian athlete Dutee Chand was banned from competing internationally having been found to be in violation of the Hyperandrogenism Regulation.

[83] Before the start of the 2012 Summer Olympic Games, the IOC decided not to hold a minute of silence to honour the 11 Israeli Olympians who were killed 40 years prior in the Munich massacre.

In June 2016, they reported that they were unable to fully carry out their work and noted intimidation by armed Federal Security Service (FSB) agents.

[91] After a Russian former lab director made allegations about the 2014 Winter Olympics in Sochi, WADA commissioned an independent investigation led by Richard McLaren.

McLaren's investigation found corroborating evidence, concluding in a report published in July 2016 that the Ministry of Sport and the FSB had operated a "state-directed failsafe system" using a "disappearing positive [test] methodology" (DPM) from "at least late 2011 to August 2015".

[92] In response to these findings, WADA announced that RUSADA should be regarded as non-compliant with respect to the World Anti-Doping Code and recommended that Russia be banned from competing at the 2016 Summer Olympics.

[113] The IOC's response was internationally criticised as complicit in assisting the Chinese government to silence Peng's sexual assault allegations.

[122][123] The President of the IOC, Thomas Bach, sent a letter to Kharlan in which he expressed empathy for her, and wrote that in light of the situation she was guaranteed a spot in the 2024 Summer Olympics.

The war against your country, the suffering of the people in Ukraine, the uncertainty around your participation at the Fencing World Championships ... and then the events which unfolded yesterday – all this is a roller coaster of emotions and feelings.

[133] In March 2024, IOC President Thomas Bach made it clear there was no issue regarding Israel participating at the 2024 Summer Olympics and cautioned athletes against boycotts and discrimination.

The lab later found that the samples were likely contaminated, as control testing revealed the presence of metandienone in substances such as nutrutional supplements and meat products.

[135] In July 2024, the IOC threatened to withdraw Salt Lake City's bid to host the 2034 Winter Olympics if U.S. authorities continued to investigate allegations of doping by Chinese swimmers.

This was intended to undermine the United States Department of Justice's criminal investigation into the allegations that the World Anti-Doping Agency covered up and failed to sanction drug use by Chinese swimmers.