Drinking Nasty Swamp Water (to save the world)

What happens to muddy water after adding a specific powder and stirring it?

• The mud dissolves completely.

• The water becomes cloudy but remains mixed.

• The mud separates from the clean water and settles at the bottom.

• The water freezes due to a chemical reaction.

How long can a human typically survive without water compared to food?

• A few days without water, three weeks without food.

• Three weeks without water, a few days without food.

• One week without water, one week without food.

• Indefinitely without either if properly hydrated.

Who invented the water purification powder and what was their initial research goal?

• A Stanford professor trying to diagnose malaria.

• A NASA scientist looking for water on other planets.

• A laundry scientist trying to separate dirt from used laundry water.

• An environmental activist aiming to clean polluted rivers.

What are the three main processes involved in purifying water using the powder described?

• Filtration, distillation, and boiling.

• Coagulation, flocculation, and chlorination.

• Sedimentation, aeration, and UV treatment.

• Absorption, precipitation, and oxidation.

What was Bill Gates' initial reaction to the pizza rolls offered by the host?

• He found them too cold.

• He found them surprisingly good.

• He found them very hot.

• He refused to try them.

What was the purpose of the "liquid refreshment" experiment demonstrated by the host?

• To show how to make coffee without a machine.

• To demonstrate a new type of energy drink.

• To illustrate how a small amount of a substance can purify dirty water.

• To create a new type of fertilizer.

What are two "selfish" reasons for rich countries to help developing nations?

• To gain political influence and access natural resources.

• To ensure their own safety and prosperity.

• To reduce global competition and maintain economic dominance.

• To expand their military presence and control trade routes.

How does helping developing nations with basic needs like clean water relate to "untapped human capital"?

• It allows more people to pursue careers in water purification.

• It frees up time and energy for innovation and education, potentially leading to global breakthroughs.

• It increases the global demand for advanced technology.

• It reduces the need for international aid organizations.