Solving for Zero: Dr. Grace Andrews of Project Vesta

TL;DR

Project Vesta is developing coastal carbon capture, a negative-emission technology that applies olivine sand to beaches so chemical weathering can transfer carbon dioxide from the atmosphere into water. Olivine is a common, naturally forming mineral that dissolves when it contacts carbon dioxide and water. Dr. Grace Andrews describes a long-term goal of removing a trillion tons of carbon dioxide. Read on to understand the process, ambition, and motivation behind the project.

Transcript

I will never know if we met our goal of limiting warming to two degrees by 2100. I will never know if my life's work paid off but my children will be here in 2100. And my children will know. (uplifting music) We are developing a negative emission technology called coastal carbon capture, which is called chemical weathering. A natural process that... Read More

Key Insights

• 🌍 Coastal carbon capture, also known as chemical weathering, is a negative emission technology that uses olivine sand to transfer carbon dioxide from the atmosphere to the water through a natural process.
• 🌊 Project Vesta applies olivine sand to beaches as a way to facilitate the chemical reaction and allow nature to remove carbon dioxide from the atmosphere.
• 🔬 The process of coastal carbon capture was explained to a chemist, who initially doubted its effectiveness but highlights the simplicity of the solution.
• 🌏 The long-term goal of coastal carbon capture is to remove a trillion tons of carbon dioxide from the atmosphere, reflecting the magnitude of the problem at hand.
• 👧 The motivation behind developing these technologies is to make the world a better place for future generations, such as the children of the present.
• 🔬 A fascination with the power of planet Earth has driven the desire to be part of finding solutions to combat climate change.
• ⚛️ Confidence exists in the ability to develop technologies that can effectively remove carbon dioxide from the atmosphere.
• 🏖️ Coastal carbon capture offers a potential solution that aligns with the natural processes of Earth and has the potential to mitigate the impact of climate change.

Questions & Answers

Q: What is Project Vesta's coastal carbon capture technology?

Coastal carbon capture is a negative-emission technology based on chemical weathering. Project Vesta applies olivine sand to beaches so a natural reaction involving the mineral, carbon dioxide, and water can transfer carbon dioxide from the atmosphere into the water.

Q: How does olivine sand remove carbon dioxide from the atmosphere?

Olivine dissolves when it comes into contact with carbon dioxide and water. That chemical reaction transfers carbon dioxide from the atmosphere into the water.

Q: Why does Project Vesta apply olivine sand to beaches?

Project Vesta uses beaches as the setting for olivine sand to come into contact with water and carbon dioxide. After applying the sand, the project more or less lets nature take its course through chemical weathering.

Q: What is chemical weathering in Project Vesta's approach?

Chemical weathering is the natural process that occurs whenever water comes into contact with rocks. Project Vesta seeks to use that process for carbon removal by placing olivine sand on beaches.

Q: What is Project Vesta's long-term carbon-removal goal?

Project Vesta's long-term goal is to someday remove a trillion tons of carbon dioxide from the atmosphere. Dr. Grace Andrews says the number is large because it reflects the size of the problem being addressed.

Q: Why is coastal carbon capture described as a negative-emission technology?

It is designed to remove carbon dioxide from the atmosphere rather than add more. The olivine reaction transfers atmospheric carbon dioxide into water.

Q: What motivates Dr. Grace Andrews to work on carbon-removal technology?

She wants to make her children's lives easier and the world better for them. She notes that her children will be alive in 2100 and will know whether the goal of limiting warming to two degrees was met.

Q: Why does Dr. Grace Andrews believe carbon-removal technology can be developed?

She expresses confidence that technologies capable of removing carbon dioxide from the atmosphere can be developed. Her work is also driven by a longstanding fascination with the power of planet Earth and a desire to be part of it.

Summary & Key Takeaways

• Project Vesta is developing a negative emission technology called coastal carbon capture using olivine sand, which dissolves when it comes into contact with carbon dioxide and water.

• By applying this sand to beaches, Project Vesta aims to harness the natural process of chemical weathering to remove carbon dioxide from the atmosphere.

• The long term goal of Project Vesta is to remove a trillion tons of carbon dioxide from the atmosphere to combat climate change.