# A critical look at geoengineering against climate change

- Institution: TED
- Department: TEDSalon 2007 Hot Science
- Speaker: David Keith
- Year: 2007
- Level: For everyone
- Language: English
- Subjects: Engineering, Earth and environment, Business and management
- Source: [TED](https://www.ted.com/talks/david_keith_a_critical_look_at_geoengineering_against_climate_change)
- Licence: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (Non-commercial use only, and no changed versions.)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

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?

## Lectures

1. [A critical look at geoengineering against climate change](https://invisiblenetwork.ai/learn/ted/david_keith_a_critical_look_at_geoengineering_against_climate_change/c691ce44dfed), 16 min (TED's player)