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Thomas Crowther

Thomas Crowther

Ecosystem Ecologist & Chief Scientific Advisor to the UN's Trillion Tree Campaign

Thomas Ward Crowther is a British scientist specializing in ecosystem ecology.

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Thomas Ward Crowtheris a British scientist specializing in ecosystem ecology and the chief scientific advisor to the UN’s Trillion Tree Campaign. He is a tenure-track professor of Global Ecosystem Ecology at ETH Zürich where he formed the Crowther Lab. His work aims to generate a holistic understanding of the global scale ecological systems which regulate the Earth’s climate.

During his post-doctoral research, Crowther was recognized for mapping the distribution and diversity of trees across the world for the first time. This research estimated that there are approximately 3.04 trillion trees on Earth, 46% fewer than at the onset of agriculture about 12,000 years ago. Previous estimates had suggested there may have been only be 400 billion trees on Earth.

In January 2020 the Crowther Lab was appointed as scientific advisor to the UN Decade on Ecosystem Restoration, a global initiative highlighting the need for greatly increased global cooperation to restore degraded and destroyed ecosystems, contributing to efforts to combat climate change and safeguard biodiversity, food security, and water supply.

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    The global movement to restore nature's biodiversity | Thomas Crowther

    Nature-based solutions in the fight against climate change | Thomas Crowther | TEDxLausanne

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