How Did the Winter Olympics Lose 5.5 Million Square Kilometers of Snow?

Recent reports indicate that the upcoming Winter Olympics in Milan-Cortina will result in significant environmental impacts, including an estimated loss of 5.5 million square kilometres of snow due to associated carbon dioxide (CO2) emissions. This figure translates to approximately 930,000 tonnes of CO2 emissions directly related to the Games, alongside an additional 1.3 million tonnes linked to corporate sponsorship activities. For context, this loss equates to the size of over 3,000 hockey rinks, highlighting the potential ecological consequences of hosting such large-scale sporting events.

Last updated: 21 January 2026 (BST)

What’s happening now

The Winter Olympics in Milan-Cortina are anticipated to commence soon, but environmentalists are raising alarms over the massive carbon footprint expected from the event. The New Weather Institute's report underscores the critical implications of the Games’ emissions, which are projected to diminish snow coverage significantly. As climate change continues to affect weather patterns, the sustainability of winter sports and events is under scrutiny.

Key takeaways

The Winter Olympics are expected to generate around 930,000 tonnes of CO2 emissions.
Corporate sponsorship activities may add another 1.3 million tonnes of CO2 emissions.
The total estimated snow loss is equivalent to over 3,000 hockey rinks.

Timeline: how we got here

The following timeline outlines key milestones leading to the current situation regarding the Winter Olympics and environmental concerns:

2022-07-06: The International Olympic Committee (IOC) awarded the Winter Olympics to Milan-Cortina.
2023-03-21: Environmentalists began raising concerns about the sustainability of the event.
2025-11-15: The New Weather Institute released a report detailing projected CO2 emissions and snow loss.
2026-01-21: Ongoing discussions about the environmental impact of the Olympics intensify as the event approaches.

What’s new vs what’s known

New today/this week

The release of the New Weather Institute's report has brought to light alarming figures about the environmental impact of the Winter Olympics, particularly the extensive loss of snow and the associated emissions. This has sparked renewed discussions on how to make future Olympic Games more sustainable.

What was already established

Prior to this report, concerns about the environmental sustainability of the Olympics have been ongoing, particularly in relation to CO2 emissions and climate change. The IOC has previously stated its commitment to reducing the environmental impact of the Games, yet such reports continue to challenge the effectiveness of these efforts.

Impact for the UK

Consumers and households

The environmental implications of the Winter Olympics may resonate with UK consumers, particularly those concerned about climate change. Increased awareness of CO2 emissions could lead to shifts in consumer behaviour, with a greater emphasis on supporting sustainable practices in travel and entertainment.

Businesses and jobs

Businesses involved in winter sports, travel, and tourism may face pressure to adopt more sustainable practices in light of these findings. Job sectors related to environmental sustainability may also see growth as companies seek to mitigate their impact on the environment.

Policy and regulation

The UK government may respond to the report by amplifying initiatives to address climate change. Possible future regulations could focus on sustainability in sports, encouraging both local and international events to adopt greener practices.

Numbers that matter

930,000 tonnes: Estimated CO2 emissions directly from the Winter Olympics.
1.3 million tonnes: Additional CO2 emissions related to corporate sponsorship activities.
5.5 million square kilometres: Expected loss of snow coverage as a result of the Games.
3,000+ hockey rinks: Size equivalent of the projected snow loss.

Definitions and jargon buster

CO2: Carbon dioxide, a greenhouse gas that contributes to global warming and climate change.
Olympics: An international multi-sport event held every four years, featuring summer and winter sports.
Corporate sponsorship: Financial support provided by companies to fund events in exchange for advertising and promotional opportunities.

How to think about the next steps

Near term (0–4 weeks)

As the Winter Olympics approach, expect increased scrutiny on the environmental impact of the event. Stakeholders may push for immediate actions to mitigate emissions.

Medium term (1–6 months)

Post-Olympics, there may be calls for accountability regarding environmental promises made by the IOC and other stakeholders. This could lead to legislative changes regarding sporting events in the UK.

Signals to watch

Public reaction to the environmental impact reports.
Legislative proposals related to sustainability in sports.
Changes in corporate sponsorship practices in response to public pressure.

Practical guidance

Do

Stay informed about the environmental impacts of major sporting events.
Support businesses and events that prioritise sustainability.
Engage with local initiatives aimed at reducing carbon footprints.

Don’t

Ignore the environmental implications of large-scale events.
Assume that corporate sponsorship will always lead to sustainable practices.
Overlook the power of consumer behaviour in driving change.

Checklist

Research the sustainability policies of events you attend.
Consider carbon offset options when travelling for events.
Support local and sustainable businesses in the event industry.
Stay updated on environmental advocacy efforts.
Engage in discussions about climate change and sports.

Risks, caveats, and uncertainties

While the New Weather Institute’s report provides alarming figures, it is essential to consider that these estimates are based on projections and assumptions. Actual outcomes may vary based on numerous factors, including potential changes in event logistics and environmental policies. Stakeholders should remain cautious about definitive conclusions until the Games have concluded and further assessments can be made.

Bottom line

The upcoming Winter Olympics in Milan-Cortina present significant environmental challenges, highlighted by substantial CO2 emissions and potential snow loss. As awareness increases, both consumers and policymakers in the UK may need to reconsider their approaches to sustainability in sports and events, urging a collective shift towards greener practices.

FAQs

What are the main environmental concerns regarding the Winter Olympics?

The main environmental concerns include the estimated 930,000 tonnes of CO2 emissions from the Games and an additional 1.3 million tonnes from corporate sponsorships, leading to a significant loss of snow coverage.

How does the snow loss from the Olympics compare to other events?

The projected loss of 5.5 million square kilometres of snow is equivalent to over 3,000 hockey rinks, highlighting the extensive environmental impact of hosting such large-scale events.

What actions can individuals take in response to the Olympics' environmental impact?

Individuals can stay informed, support sustainable businesses, engage in local initiatives, and advocate for environmentally responsible practices in sports and events.