Geoengineering and Its Impacts

The video discusses geoengineering as a potential solution to climate change, exploring three main strategies: modifying clouds to reflect sunlight, fertilizing oceans to increase CO2-absorbing phytoplankton, and injecting sulfur dioxide into the stratosphere to cool the planet. Each method has potential benefits and risks, highlighting the complexity of addressing global warming.

What is the primary goal of geoengineering as discussed in the video?

• To increase the Earth's temperature

• To alter climate systems to counteract global warming

• To reduce the use of renewable energy

• To eliminate all fossil fuels

Which type of clouds are targeted for manipulation to help with climate change?

• Nimbus clouds

• Cumulus clouds

• Cirrus clouds

• Stratus clouds

What is a potential downside of cloud whitening?

• Increased global rainfall

• More hurricanes

• Decreased global rainfall

• Higher temperatures

What is the main purpose of fertilizing the oceans with iron?

• To increase fish population

• To boost phytoplankton growth

• To reduce ocean acidity

• To enhance coral reef health

What environmental issue can result from artificial algae blooms?

• Creation of dead zones

• Higher fish populations

• Increased oxygen levels

• Improved water clarity

What natural event is mimicked by injecting sulfur dioxide into the stratosphere?

• Tornadoes

• Earthquakes

• Hurricanes

• Volcanic eruptions

What is a potential effect of creating a shady stratosphere?

• More sunlight reaching the Earth

• Decreased rainfall

• Increased global temperatures

• Higher sea levels

How might the shady stratosphere strategy affect regional climates?

• It would increase rainfall in all regions

• It would have no effect on regional climates

• It would cool the equator more than the poles

• It would make all regions warmer

What is a common concern about geoengineering strategies?

• They are universally accepted

• They are too cheap to implement

• They require no scientific research

• They might have unintended consequences

What is the main challenge with testing geoengineering methods?

• Lack of funding

• No multiple Earths for trials

• Too many successful trials

• Excessive public support