4 Awesome Discoveries You Probably Didn’t Hear About - Episode 32

The video discusses four scientific discoveries: the weak tooth enamel of alligators and crocodiles, the potential of graphene to prevent mosquito bites, the impact of cat parasites on sea otters, and predictions of increased flooding due to climate change. It highlights the possibility of bioengineering new teeth, the development of a mosquito-repelling material, the spread of infectious agents from land to sea, and the need for city planners to consider future flood risks.

What is the main reason alligators and crocodiles are not concerned about losing their teeth?

• They have a special diet that protects their teeth.

• They can regrow their teeth.

• They have strong tooth enamel.

• They do not use their teeth for eating.

How does graphene help in preventing mosquito bites?

• It releases a chemical that kills mosquitoes.

• It changes the skin's temperature to deter mosquitoes.

• It acts as a physical barrier and cloaks chemical signals.

• It emits a repellent odor.

What is the source of the parasite affecting southern sea otters?

• Polluted water

• Cat droppings

• Industrial waste

• Bird droppings

What is the predicted frequency of 100-year floods in New England later this century?

• Every 5 years

• Every year

• Every 10 years

• Every 50 years

What factors are considered in the flood prediction study?

• Temperature changes and wind patterns

• Population growth and urban development

• Deforestation and soil erosion

• Storm surge, sea level rise, and storm intensity