TED-Ed: Whatever happened to the hole in the ozone layer? | Stephanie Honchell Smith

The video discusses the discovery of the ozone layer's depletion due to CFCs, highlighting the scientific findings of Molina and Roland. It covers the global political response, including the Montreal Protocol, which successfully phased out CFCs. The video also addresses the ongoing challenges posed by HFCs and the need for continued global cooperation to combat climate change.

What role does the ozone layer play in protecting life on Earth?

• It reflects sunlight to cool the Earth.

• It provides oxygen for breathing.

• It absorbs harmful UV radiation.

• It traps greenhouse gases.

What was the primary use of CFCs when they were first developed?

• As a fuel for vehicles

• As coolants for refrigerators

• As a pesticide

• As a cleaning agent

Which two world leaders played a crucial role in the fight to ban CFCs?

• John F. Kennedy and Winston Churchill

• Ronald Reagan and Margaret Thatcher

• Bill Clinton and Tony Blair

• George Bush and Angela Merkel

What was the main outcome of the Montreal Protocol?

• A reduction in carbon emissions

• The introduction of new CFCs

• A rapid phase-out of CFCs

• A complete ban on all greenhouse gases

What is the purpose of the Kigali Amendment to the Montreal Protocol?

• To promote the use of fossil fuels

• To ban all chemical emissions

• To cut global HFCs by 85%

• To increase the use of CFCs