18. Saving water in the driest place on Earth

What is the main topic of this episode?

• Organic farming
• Liquid clay technology in agriculture
• Desert wildlife
• Water recycling systems

Where is the liquid clay technology being tested?

• Nevada
• Arizona
• Yuma, USA
• Texas

What percentage of the world's freshwater is used by agriculture?

• 40%
• 55%
• 70%
• 85%

Who is Ole Sivertson?

• A journalist
• A farmer
• An engineer
• A representative from Desert Control

What does sandy soil struggle to do?

• Store heat
• Hold water
• Grow vegetables
• Prevent erosion

What does the liquid clay mixture aim to replicate?

• Fertilizer
• Clay soil properties
• River irrigation
• Rainfall

How much does it cost to treat an acre with liquid clay?

• $1,000
• $2,000
• $3,000
• $5,000

What is a benefit claimed by Ole about liquid clay?

• It increases soil acidity
• It eliminates weeds
• It halves water usage
• It kills pests

What concern does Myra raise about liquid clay?

• It spreads too fast
• It contains chemicals
• It may have unknown future effects
• It harms animals

What modern use of clay was the answer to the quiz question?

• Curing headaches
• Digesting food
• Smoothing face skin
• Soothing sore muscles