Climate Policy.
Climate motions are won by whoever does the actual policy comparison out loud. The science is settled; the disagreement is about which lever (tax, subsidy, regulation, treaty, geoengineering) does the most per dollar, and who pays.
01Core concepts
Mitigation vs adaptation
Mitigation: reduce emissions to limit future warming. Adaptation: prepare for the warming already locked in. Most policy is mitigation-flavored; the adaptation conversation matters more every year the world overshoots its mitigation targets.
Carbon pricing
Two flavors: a carbon tax (set the price, market chooses the quantity) and cap-and-trade (set the quantity, market chooses the price). Economists prefer one or the other; political feasibility usually picks cap-and-trade because the cost is opaque.
Net-zero targets
Emissions cut to whatever can be balanced by removals (forests, direct-air capture, soil sequestration). Almost every rich country has a 2050 net-zero pledge; almost none are on track.
Loss and damage
Compensation from rich-country emitters to poor-country victims for climate harms that have already happened. The COP27 wedge issue. Distinct from adaptation funding (preparing for future harm) and mitigation finance (cutting emissions).
Just transition
A decarbonization path that doesn't collapse the coal-town, oil-state, gas-driver economies on the way. Often the political pivot that makes mitigation possible.
Geoengineering
Direct intervention in the climate system. Two families: carbon-dioxide removal (slow, expensive, low-risk) and solar radiation management (fast, cheap, high-risk). The latter is what people mean when they say "geoengineering is dangerous."
Tipping points
Thresholds past which climate damage becomes self-reinforcing: Amazon dieback, Greenland ice-sheet collapse, permafrost methane release. The reason "we can adapt" arguments get weaker each year.
Common but differentiated responsibilities
UNFCCC principle: all states have a duty to act on climate, but rich states (historical emitters) have a bigger one. The pivot of every North-South climate disagreement.
02How this shows up in debates
Pricing motions
"THW impose a global carbon tax of $100/tonne." Standard economic case is strong; political-feasibility opp turns on regressive impact on poor consumers and competitiveness loss versus non-pricing trade partners.
Loss-and-damage motions
"THBT rich nations have an unconditional duty to compensate climate-vulnerable nations." Pick a frame: historical-responsibility (you broke it, you bought it), capacity-to-pay (the marginal cost falls more on the poor), or institutional (compensation makes future cooperation impossible).
Technology motions
"THW deploy solar-radiation-management geoengineering." The cleanest moral-hazard motion in the format. Gov: science says it works, costs are negligible, every year of delay is more dead people. Opp: changes monsoon patterns, creates a termination shock, sets up unilateral deployment by a single state.
Justice motions
"THBT the climate movement should prioritize Global South adaptation over Global North mitigation." Reframes the whole debate: the people most harmed are not the people whose emissions are at stake, and the dollar-per-life-saved math points to adaptation finance.
03What people get wrong
"Renewables are too expensive."
Solar PV is now the cheapest source of electricity in most regions of the world per the IEA. The cost of new solar fell ~90% from 2010 to 2024. The expensive parts are storage and grid upgrades, not generation.
"Individual action solves climate change."
Personal lifestyle changes are necessary but quantitatively small. About 70% of emissions come from 100 companies (Carbon Majors data). The lever that moves at the right scale is policy, not consumer choice.
"Nuclear is too dangerous."
Per-terawatt-hour of energy produced, nuclear has roughly the same death rate as wind or solar (Our World in Data, citing Markandya and Wilkinson). Coal kills hundreds of times more people per TWh, mostly through air pollution.
04Self-check quiz
Five questions to check what stuck. Click an option, the right answer and the why appear below. Your best score saves locally so you can come back and beat it.
05Sample motions
THW impose a globally uniform carbon tax of $100/tonne.
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THBT solar-radiation-management research should be banned.
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THW make rich nations legally liable for climate-induced migration from poor nations.
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THBT the environmental movement should embrace nuclear power.
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THW require all new fossil-fuel projects to demonstrate climate compatibility before receiving permits.
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06Where to go deeper
How to Avoid a Climate Disaster
by Bill Gates
Best policy-mechanic walkthrough of the green premium concept (what does decarbonization actually cost per sector) you'll find under 250 pages.
The Uninhabitable Earth
by David Wallace-Wells
The catastrophe scenario in full. Read this AFTER something less alarmed so you can calibrate.
IPCC AR6 Synthesis Report (Summary for Policymakers)
by IPCC
The 30-page consensus document the rest of the conversation is arguing about. Free, public, current.
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