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How to Avoid a Climate Disaster Knowledge Check

Test your mastery of the core principles.

Question 1 of 4
What is the total annual amount of greenhouse gases humanity adds to the atmosphere?
Explanation: Gates anchors his entire framework around the baseline number of 51 billion tons of annual greenhouse gas emissions.
Question 2 of 4
What does the Green Premium measure?
Explanation: The Green Premium is the economic metric representing the cost difference between emitting and clean alternatives.
Question 3 of 4
Which sector accounts for the largest share of global greenhouse gas emissions?
Explanation: Making things (steel, cement, plastic) is the single largest emitting sector at 31 percent, followed closely by electricity.
Question 4 of 4
Why are advanced liquid fuels (electrofuels) necessary for aviation and shipping?
Explanation: Heavy transport requires high energy density without excessive weight, making chemical fuels necessary over heavy batteries.