TED-Ed: The world’s longest-burning fires | Emma Bryce

Zombie fires, also known as peat fires, are a significant source of greenhouse gas emissions, burning underground and often unnoticed. These fires are fueled by carbon-rich peat, which is highly flammable. Climate change and human activities like peatland drainage increase the risk of these fires. Combating them is challenging due to water's high surface tension, but methods like reducing water tension and controlled burns are being explored. Preserving peatlands is crucial as they store a large amount of the planet's carbon.

What percentage of global greenhouse gas emissions is attributed to subterranean fires?

• 15%

• 10%

• 5%

• 20%

Which of the following is NOT a requirement for a standard fire to occur?

• Water

• Oxygen

• Heat

• Fuel

What is the primary component left behind after pyrolysis that contributes to smoldering fires?

• Flame

• Smoke

• Char

• Ash

Why are peatlands considered significant in the context of carbon storage?

• They store a large amount of carbon due to slow decomposition.

• They are primarily found in tropical regions.

• They decompose rapidly, releasing carbon.

• They cover a large area of Earth's surface.

What is one method being researched to improve the effectiveness of water in extinguishing peat fires?

• Applying water at high pressure

• Increasing water temperature

• Reducing water surface tension

• Using saltwater instead of freshwater