Geoengineering
Against it
In support of it
Change is necessary
Individuals involved
Results are uncertain
Gathering of CO2
Biochar and reafforestation
Solar radiation management
Individuals involved
Tim Flannery
Paul Crutzen
Cutting greenhouse gases are urgently required
Biochar is natural
Man who began movement towards geoengineering
In support of SRM
Introduces heavy amount of sulfur aerosols into atmosphere
Cheaper than other proposed plans
Unknown risks as to what happens once aerosols are gone.
Uses naturally made char for farms
Introduces _ that will help growth in the ocean.
Less pesticides needed
Least risky of the three plans
Enhances smaller
scaled methods already in use.
Not tested on wide scale use
No place to dispose of CO2 once gathered
Fastest method
Doesn't reduce acidification of oceans
Mark McClandish
Dane Wigington
Releasing metals will shift weather patterns
Founder of Geoengineeringwatch.org
Large conductivity in affected areas
Brick sized hail
Some scientists are trying to rush the change
Geoengineering holds an extremely large potential
More mistakes are likely and may be irreversible
Proposed methods are expensive and unreliable
Costs well over $25 billion
Unknown consequences of stopping release of CO2 or aerosols
Cut 40% of CO2 emissions by 2050
Can be used on farms to enrich soils
Stores CO2 for long periods of time