TED-ED: Can 100% renewable energy power the world? - Federico Rosei and Renzo Rosei

The video discusses the global reliance on fossil fuels and the challenges of transitioning to renewable energy sources. It highlights the potential of solar, wind, and other renewables, but also the technological and logistical hurdles in achieving 100% renewable energy. The video explores the need for efficient energy capture, transportation, and storage, particularly in the context of electricity and liquid fuels. It emphasizes the importance of innovation and investment in overcoming these challenges and expresses optimism about the future of renewable energy.

What percentage of the world's oil have we consumed according to scientists?

• 40%

• 60%

• 20%

• 80%

What is a major challenge in transitioning to 100% renewable energy?

• Lack of sunlight

• High cost and accessibility

• Insufficient wind

• Limited water resources

Why can't we easily build solar plants to meet our energy needs?

• Lack of technology

• High cost and efficiency issues

• Insufficient sunlight

• Environmental concerns

What is a limitation of current lithium-ion batteries compared to gasoline?

• Longer charging time

• Heavier weight

• Lower energy density

• Higher cost

What is a promising solution for storing renewable energy in a transportable form?

• Hydroelectric power

• Geothermal energy

• Wind energy

• Solar to chemical energy conversion

What are the main factors involved in the transition to renewable energies?

• Innovation, creativity, and incentives

• Population, demand, and supply

• Geography, climate, and resources

• Technology, economics, and politics

Why is there optimism about achieving a sustainable energy future?

• Decreasing energy demand

• Stable political climate

• Abundant fossil fuels

• Scientific breakthroughs and investments