SUMMARY

15:56 minutes

TED Talks series, FILMED SEP 2007 • POSTED NOV 2007 • TEDSalon 2007 Hot Science

Environmental scientist David Keith proposes a cheap, effective, shocking means to address climate change: What if we injected a huge cloud of ash into the atmosphere to deflect sunlight and heat?

GOALS

Keith wants to open up discussion on the available climate cooling techniques that science can offer and produce.

ACTIVITY DESCRIPTION AND TEACHING MATERIALS

Listen >> TED Talks: David Keith's Unusual Climate Change Idea

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TEACHING NOTES / CONTEXT FOR USE

This material can be used to explore the more unconventional methods for reversing global warming that are being invented and considered as the Earth continues down a dire state.

ASSESSMENT

Assessment is at the discretion of the educator and how this material is applied.

REFERENCES AND RESOURCES

David Keith studies our climate, and the many ideas we've come up with to fix it. A wildly original thinker, he challenges us to look at climate solutions that may seem daring, sometimes even shocking. Full Bio >>