How much land does it take to power the world? | TED-Ed

The video discusses the space requirements for generating electricity from various sources, including coal, nuclear, solar, and wind. It highlights the global space needed to power the world and the environmental and economic considerations of each energy source. The video emphasizes the importance of optimizing energy infrastructure and exploring future solutions to reduce greenhouse gas emissions and improve efficiency.

Which energy source requires the least amount of space to power a 10-watt light bulb?

• Wind power

• Solar power

• Nuclear power

• Fossil fuels

How much land would be needed to power the entire world using solar energy?

• 1,200 square kilometers

• 4,000 square kilometers

• 95,000 square kilometers

• 2 million square kilometers

What is a significant advantage of wind power in terms of land use?

• The land used for wind power can still be utilized for other purposes.

• Wind turbines can be placed very close together.

• Wind power requires no land at all.

• Wind turbines are more efficient when placed in urban areas.

What percentage of global greenhouse gas emissions is attributed to electricity generation?

• 27%

• 75%

• 50%

• 10%

Why might nuclear power not be the best option for every region?

• It is dependent on weather conditions.

• It is expensive to build and has waste management issues.

• It requires a lot of space.

• It emits a lot of greenhouse gases.