PCA Climate Change

Question 1

What is causing rapid climate change?

Answer 1

the release of greenhouse gases

Question 2

How much more CO2 was emitted in 2019 compared to 2000?

Answer 2

50% more

Question 3

What are the four factors that together can express our collective CO2 emissions and how to change it?

Answer 3

population size, economic growth, energy intensity and emissions per energy unit produced.

Question 4

What is the prediction of what global population will level off at?

Answer 4

11 billion people by 2100

Question 5

Why will global CO2 emissions rise over the next few decades?

Answer 5

The population is expected to continue to grow.

Question 6

How does the carbon footprint of a US programmer compare to a farmer in Uganda?

Answer 6

The programmer’s carbon footprint is 50 times larger.

Question 7

In addition to an increase in emissions, what has economic growth led to?

Answer 7

The largest reduction in extreme poverty in human history.

Question 8

What is energy intensity?

Answer 8

How efficiently energy is used.

Question 9

What are the 3 factors why increased energy efficiency is not enough to reduce CO2 emissions?

Answer 9

Direct rebound, indirect rebound, return on investment

Question 10

What is the CO2 emissions per kilowatt-hour of energy generated by coal power plants compared to solar power plants (gCO2/kWh)?

Answer 10

Solar power plants are 45 and coal power plants are 820