Carbon Sink to Carbon Source? How the Amazon Rainforest Could Become a Self-Drying Savanna | Carlos Nobre | TGS 150
The Great Simplification with Nate Hagens
Nate Hagens
4.8 • 552 Ratings
🗓️ 13 November 2024
⏱️ 72 minutes
🧾️ Download transcript
Summary
(Conversation recorded on September 25th, 2024)
The Amazon Rainforest is one of the Earth's most vital systems, playing a key role in maintaining the balance and stability of our climate. Yet this extraordinary ecosystem, which influences global rainfall patterns and regulates temperatures, is increasingly threatened by human activity. What is the current status of the ancient Amazon Rainforest, and how could its trajectory shape the entire planet for thousands of years to come?
In today's episode, Nate speaks with Earth scientist Carlos Nobre to explore the critical challenges facing the Amazon. They delve into the rainforest's unique ecological dynamics, the devastating impact of deforestation and wildfires on its ability to function, and how the health of the Amazon directly influences the climate of the entire world.
In what ways does the astounding biodiversity of the Amazon play critical roles in its resilience, and how is that biodiversity being put at risk? How could a system that has sustained its own water cycles for millions of years suddenly tip into a self-drying savanna? Finally, what actions should countries – beyond the Amazonia region itself – take to support the conservation and restoration of the world's largest rainforest and the people that call it home?
About Carlos Nobre:
Carlos A. Nobre is an Earth Scientist from Brazil, currently associated with the University of
São Paulo. He is also the co-chair of the Science Panel for the Amazon-SPA. He obtained his PhD in Meteorology at MIT. Nobre's work mostly focuses on the Amazon and its impact on the Earth System. He chaired the Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). He is a foreign member of the US National Academy of Sciences and the Royal Society, and member of the Brazilian Academy of Sciences and the World Academy of Sciences. He was awarded several prizes including the Volvo Environmental Prize, the AAAS Science Diplomacy Award and AAAS Fellow Award. He also developed the Amazonia 4.0 initiative, an innovative project to demonstrate the feasibility of a new socio-bioeconomy of standing forests and flowing rivers in the Amazon.
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Transcript
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| 0:00.0 | If you exceed the tipping point, within 30 to 50 years, we are going to lose between 50 and 70% of the forest. |
| 0:08.9 | We may reach the tipping point by 2050 if we continue the way we are doing deforestation and global warming. |
| 0:16.0 | If we were able to get to zero deforestation. There are many thousands of species we call secondary |
| 0:23.2 | forest. They grow so fast, but we have to get zero deforestation and then to create a large-scale |
| 0:30.5 | forest restoration. You're listening to the Great Simplification. I'm Nate Hagen's. |
| 0:38.9 | On this show, we describe how energy, the economy, the environment, and human behavior all fit together and what it might mean for our future. |
| 0:47.7 | By sharing insights from global thinkers, we hope to inform and inspire more humans to play emergent roles in the coming great simplification. |
| 1:01.2 | Today's guest is Carlos Nobri, an earth scientist from Brazil, who is currently a senior researcher at the University of Sao Paulo, |
| 1:10.0 | with his work primarily focusing on the Amazon jungle and its impact on the Earth system. |
| 1:17.1 | Carlos is also the co-chair of the science panel for the Amazon, and he was formerly the chair of the large-scale biosphere atmosphere experiment in Amazonia. |
| 1:26.2 | He's also a member of the British Academy of Sciences, as well of the World Academy of Sciences. |
| 1:32.5 | Through his work on the Amazon, Carlo has also developed the Amazonia 4.0 initiative, |
| 1:38.6 | an innovative project to demonstrate the feasibility of a new socio-bio-economy of standing forests and flowing rivers in the |
| 1:48.2 | Amazon. This is the first of several interviews I have focusing on the critical importance of |
| 1:54.9 | maintaining the forests in the Amazon, how close we are to long-term tipping points flipping into a savannah and what people |
| 2:04.6 | in Brazil and what people in the world need to do to forestall and eliminate these risks. |
| 2:12.6 | Carlos joins me to discuss how the Amazon is a foundational system, not only for regional ecosystems |
| 2:19.9 | in South America, but for global weather systems and the entire biosphere. I hope you learn and |
| 2:27.0 | enjoy this conversation, enjoy in quotes, with Carlos Nobri. |
| 2:41.2 | Carlos Nobri, welcome to the program. |
| 2:42.2 | Thank you. |
| 2:43.7 | Thank you very much for an invitation. |
... |
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