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This is Heïdi

Heïdi is a Glaciologist who, in April 2021, led the first carbon-neutral science expedition in the Arctic in modern times. Her research provides invaluable information on glaciers, such as black carbon particles, which could be vital in preventing further glacial melting and rising sea levels. In addition, Heïdi advises governments worldwide on questions regarding glaciers and climate change.

With your help

Heïdi will be able to complete her groundbreaking research and further educate politicians to make vital decisions to stop global warming.

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Climate Sentinels

Heïdi Sevestre

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Awards & features:

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Why care

99.9 % of all glaciers are currently melting, contributing to a significant threat – sea-level rises. Over 700 million people will be directly affected by this. Indirectly, massive streams of climate refugees will dramatically increase population density, diseases, and conflicts.

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The work

Heïdi is a Glaciologist who conducts expeditions to research our melting glaciers.

  • Heïdi and the other members of Climate Sentinels conducted the first-ever carbon-neutral modern science expedition to the Arctic in April 2021.

  • She gathers data on Arctic pollution by collecting snow and ice samples. She measures the concentration of fine particles to further understand the urgency and composition of atmospheric pollution.

  • Heïdi works to spread awareness to communities to put pressure on politicians.


  • Has completed numerous community outreach programs with schools and universities in Sweden, Norway, France, and the US to educate students on the impact of climate change.

  • Has been a part of various expeditions, working in Svalbard, the Himalayas, Greenland, Colombia, and the Larsen C ice shelf in Antarctica.

  • Conducted the first-ever carbon-neutral modern science expedition in the Arctic in April 2021.

  • Has worked with students to build sensors for the expedition and empowered them to take action.

  • Is the host of “Extreme Earth” for French TV, France 5.

Sustainable development goals
SDG 13 Climate Action

The mission

Heïdi is on a mission to better understand how and why our glaciers are melting so that she can get decision-makers to act and help pioneer solutions.

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