Responses to global warming & climate change

Mitigation refers to actions that REDUCE or PREVENT greenhouse gas emissions, tackling the CAUSE of climate change — e.g. switching to renewable energy, electric vehicles, or planting forests [1 mark].

Adaptation refers to actions that PREPARE FOR + COPE WITH the impacts of climate change, tackling the EFFECTS — e.g. building sea defences (Netherlands Delta Works), growing drought-tolerant crops, restoring mangroves, early warning systems [1 mark].

1. Kyoto Protocol (1997, in force 2005) — Legally binding emissions-reduction targets for ~37 industrial countries; first major climate treaty [1 mark].
2. Paris Agreement (2015) — Limit warming to well below 2°C (aim 1.5°C); Nationally Determined Contributions (NDCs) updated every 5 years; ~195 signatories; ratchet mechanism [1 mark].
3. Dubai COP28 (2023) — First-ever explicit agreement on "transitioning away from fossil fuels"; Loss + Damage Fund operationalised ($700m initial pledges); tripling renewable capacity by 2030 goal [1 mark].

1. Renewable energy expansion — Germany Energiewende. Germany launched its Energiewende ('energy transition') in 2010 with €500bn invested. By 2023, renewables provided ~50% of electricity (wind ~25%, solar ~12%, hydro + bio ~13%); nuclear phase-out completed April 2023. Target: net-zero 2045 [1 mark].

2. Electric vehicle transition — China + Norway. China captured ~30% of global EV market by 2024 (~10m EVs sold/yr); BYD overtook Tesla as world's largest EV maker in 2023; sustained by industrial policy + battery dominance. Norway leads adoption — ~80% of new cars electric 2023, supported by tax exemptions + free tolls/charging [1 mark].

3. Reforestation — Ethiopia + Pakistan. Ethiopia's Green Legacy Initiative planted 350 million trees in a single day (29 July 2019, Guinness world record); 25bn trees overall since 2019 toward 20bn target by 2030. Pakistan's Billion Tree Tsunami (2014-17) planted 1bn trees in Khyber Pakhtunkhwa province; expanded to 10bn national target [1 mark].

4. Carbon pricing — EU Emissions Trading System. EU ETS launched 2005 — world's largest carbon market; covers ~40% of EU emissions; carbon price reached ~€90/tCO2 in 2023; cut covered emissions ~35% since 2005 [1 mark].

1. Sea defences — Netherlands Delta Works. After the 1953 North Sea flood (1,836 deaths), the Netherlands built 13 dams, sluices + storm-surge barriers (~$13bn over 44 years to 1997); protects ~9 million people from sea-level rise + storm surges; Maeslantkering is the largest moving structure on Earth. No major flood since 1953 [1 mark].

2. Mangrove restoration — Vietnam. Vietnam restored ~50,000 ha of mangroves along Red River + Mekong deltas since 1990s; IFRC estimated ~$1.1m investment saves ~$7.3m/yr in dike maintenance + protects coast from cyclones, sea-level rise + tsunami [1 mark].

3. Drought-tolerant crops — CGIAR DTMA programme. CGIAR (international agricultural research) bred drought-tolerant maize varieties distributed to ~13 African countries; yields ~40% higher under drought; ~50m smallholder farmers benefiting. Climate-smart agriculture (FAO) expanding [1 mark].

4. Early-warning systems — Bangladesh CPP. Bangladesh Cyclone Preparedness Programme uses ~76,000 trained volunteers + radio + sirens. Cyclone deaths fell from ~500,000 (1970 Bhola Cyclone, M5) to ~26 in 2020 (Cyclone Amphan, similar magnitude) — ~99% reduction. Cheap + scalable model for low-income countries [1 mark].

The Paris Agreement (December 2015, in force November 2016) is the cornerstone of international climate policy — but its effectiveness is mixed.

Successes.

Universal participation. ~195 countries signed — including USA + China + India, who had refused to sign Kyoto. The 1.5°C goal is now the explicit global target. NDCs (Nationally Determined Contributions) require every country to set + update plans every 5 years — the 'ratchet mechanism' [1 mark].

Catalysed national action. Net-zero pledges followed: UK 2050 (legally binding 2019), EU 2050, USA 2050, Japan 2050, China 2060, India 2070; ~140 countries now have net-zero commitments covering ~90% of global emissions [1 mark].

Strengthened over time. COP26 Glasgow (2021) agreed coal phase-down (first explicit mention) + halt deforestation by 2030 (Glasgow Leaders' Declaration). COP28 Dubai (2023) agreed transition away from fossil fuels + tripling renewables by 2030 + Loss + Damage Fund operationalised [1 mark].

Limitations.

Insufficient ambition. Even if all NDCs delivered, world tracks for ~2.5-2.9°C warming (UNEP Emissions Gap Report 2023), not 1.5°C. Current emissions still rising — ~37 Gt CO2 in 2023, record high. 1.5°C overshoot now likely by ~2030 [1 mark].

Weak enforcement. No legally binding penalties for missing NDCs; countries can withdraw (Trump withdrew USA 2017, rejoined under Biden 2021). $100bn/yr climate finance pledge delivered late + below promised. Loss + Damage Fund$700m pledged vs ~$580bn/yr estimated need [1 mark].

Judgement. Paris is necessary but not sufficient. It is the BEST framework realistically achievable but inadequate alone. Effective response requires: (a) faster NDC ambition, (b) carbon pricing scaled, (c) finance multiplied, (d) HIC delivery on Loss + Damage. The Paris framework is salvageable but the gap from pledges to action must close urgently [1 mark].

Reaching net-zero by 2050 is technologically possible — but economic + political feasibility remains contested.

Technology — feasible NOW.

Renewables are already cost-competitive: solar PV costs fell ~90% since 2010; wind ~70%; solar now cheapest electricity in history per IEA. Battery storage costs fell ~85% since 2010; ~$140/kWh 2023 vs$1,300 in 2010. EVs price-parity with ICE expected ~2026-28. Heat pumps mature in Norway + Sweden (>40% market share). The IEA Net Zero by 2050 roadmap (2021) is technologically achievable [1-2 marks].

Harder sectors.

~30% of emissions come from "hard to abate" sectors: steel, cement, aviation, shipping, agriculture. Solutions exist but expensive: green hydrogen for steel (Hybrit Sweden first 'green steel' shipped 2021); SAF (sustainable aviation fuel) ~$2-5/litre vs ~$0.60 jet fuel; nuclear fusion (ITER, demonstration ~2035). Carbon capture (Drax UK BECCS; Iceland Climeworks 36,000 t CO2/yr) at scale required [1-2 marks].

Economics — affordable but distributive challenges.

McKinsey + Stern Review estimate cost ~1-2% of global GDP/yr to 2050 — manageable. Inaction cost: Stern Review 2006 = 5-20% global GDP/yr. Every $1 in mitigation saves$4 in damages (Global Commission on Adaptation 2019). BUT financing concentrated in HICs while costs concentrate in LICs without finance access [1 mark].

Political feasibility — the main constraint.

Fossil fuel companies + producer states (Saudi Arabia, Russia) resist transition. Energy security concerns reignited by 2022 Ukraine invasion. Populist backlash (UK delayed ICE ban from 2030 → 2035; some EU farmer protests on green rules). Net-zero requires sustained political will across electoral cycles [1 mark].

Just transition.

Coal/oil workers must be supported (EU Just Transition Fund €17.5bn; UK Ratcliffe-on-Soar closed Sept 2024 with worker support). Public acceptance crucial. Inclusive policy beats top-down [1 mark].

Judgement. Net-zero by 2050 is technologically + economically feasible if (a) renewables continue scaling, (b) carbon pricing harmonised globally, (c) hard-to-abate solutions accelerated, (d) finance flows to LICs, (e) political will sustained. The main barrier is political, not technical [1 mark].

The mitigation-vs-adaptation question is one of the central dilemmas of climate policy. The strongest answer recognises both are essential — but with different priorities at different scales.

The case FOR prioritising mitigation.

Mitigation tackles the ROOT CAUSE — emissions are the cause of warming, so cutting emissions is the only way to PREVENT future damage. IPCC AR6 (2021-23) shows that limiting warming to 1.5°C requires global emissions to halve by 2030 + reach net-zero by ~2050 — without this, catastrophic + irreversible impacts (Amazon savannisation, AMOC shutdown, multi-metre sea-level rise) become likely. Successful mitigation cases: Germany Energiewende (~50% renewable electricity, €500bn invested, net-zero 2045 target); China EV revolution (~30% new car sales 2024, ~10m EVs/yr, BYD overtook Tesla 2023); Ethiopia Green Legacy 350m trees in a single day (2019). Crucially, mitigation costs ~1-2% of GDP/yr per McKinsey, vs inaction costs 5-20% of GDP/yr (Stern Review). Every $1 invested in mitigation saves$4 in future damages [3 marks].

The case FOR prioritising adaptation.

Some warming is already locked in: CO2 already emitted persists 100-1,000 years; current ~1.45°C above pre-industrial guarantees impacts continue regardless of mitigation. Adaptation saves lives NOW: Bangladesh Cyclone Preparedness Programme cut cyclone deaths from ~500,000 (1970 Bhola) to ~26 (Amphan 2020) — a ~99% reduction at trivial cost (~76,000 volunteers + radio/sirens). Netherlands Delta Works ($13bn over 44 years) has prevented major flood since 1953; protects ~9 million people. Vietnam mangrove restoration ($1.1m → $7.3m/yr saved). For vulnerable countries — Pakistan (2022 floods$30bn + 1,700 deaths, <1% emissions), Maldives (existential), Sahel (desertification) — adaptation IS the priority because mitigation cannot reverse near-term impacts [3 marks].

The integrated answer — BOTH essential.

IPCC AR6: 'mitigation + adaptation are equally necessary'. They tackle different time horizons: mitigation prevents catastrophic LONG-term outcomes; adaptation manages NEAR-term impacts already locked in. They are complementary, not competitive. Climate justice demands HICs lead mitigation (caused warming + have capacity) while supporting adaptation in LICs (~75% of impacts hit countries causing ~10% emissions). Loss + Damage Fund (COP28 2023, $700m pledged) recognises the third category — impacts neither can prevent [1 mark].

Judgement. No single priority — but the SPLIT should reflect context: HICs prioritise mitigation (capacity + responsibility); LICs prioritise adaptation funded by HICs (vulnerability). The Paris Agreement framework, despite gaps, is correct in addressing both. The real failure is INADEQUATE AMBITION on either front — current NDCs track for ~2.5-2.9°C warming (UNEP Emissions Gap Report 2023), forcing more reliance on costly adaptation later [1 mark].

The world's climate response shows both significant progress + serious gaps. The 'failure' framing captures real inadequacies — particularly insufficient ambition + climate-justice gaps — but understates concrete successes. The statement is partially true.

Evidence the world IS responding — significant progress.

International framework. Paris Agreement (2015) achieved universal participation (~195 countries) with 1.5°C goal + NDCs. Net-zero pledges now cover ~90% of global emissions: UK 2050 (legally binding 2019), EU 2050, USA 2050, China 2060, India 2070. COP26 Glasgow (2021) agreed coal phase-down + halt deforestation 2030. COP28 Dubai (2023) agreed transition away from fossil fuels + tripling renewables by 2030 + operationalised Loss + Damage Fund [2 marks].

Real mitigation achievements. Germany Energiewende ~50% renewable electricity (€500bn invested); China dominates global EV market (~30% new car sales 2024, ~10m EVs/yr); solar PV costs fell ~90% since 2010 (cheapest electricity in history per IEA); Ethiopia 350m trees in a single day 2019; UK closed last coal plant September 2024 (Ratcliffe-on-Soar). EU ETS carbon price reached ~€90/tCO2 in 2023 [2 marks].

Real adaptation achievements. Bangladesh CPP cut cyclone deaths ~99% (500k 1970 → 26 in 2020); Netherlands Delta Works protected 9 million people through ~$13bn investment; Vietnam mangrove restoration (~50,000 ha) cost-effective protection; CGIAR drought-tolerant maize benefits ~50m African smallholders [1 mark].

Evidence the world IS FAILING — structural barriers.

Ambition gap. Even if NDCs delivered fully, world tracks ~2.5-2.9°C warming (UNEP Emissions Gap Report 2023), not 1.5°C. Emissions still rising — record ~37 Gt CO2 in 2023. Lifestyle + consumption emissions in HICs continue. 1.5°C overshoot now likely by ~2030 [2 marks].

Climate-justice failure. HICs caused warming (USA + EU ~52% historical emissions) but LICs bear ~75% impacts despite ~10% emissions. Pakistan 2022 floods caused $30bn damage + 1,700 deaths despite contributing <1$100bn/yr climate finance promise delivered late + below promised. Loss + Damage Fund $700m pledges (COP28 2023) vs ~$580bn/yr estimated need — wholly inadequate. Maldives + Tuvalu face existential threat with negligible emissions [2 marks].

Structural political barriers. Fossil fuel companies + producer states (Saudi Arabia, Russia, UAE) resist transition; Russia + Ukraine invasion 2022 reignited energy security concerns delaying renewables in some countries. Populist backlash: UK delayed ICE car ban 2030 → 2035; EU farmer protests against green rules; Trump withdrew USA from Paris 2017 (Biden rejoined 2021); short electoral cycles vs multi-decade challenge. National sovereignty constrains binding commitments — no legally binding penalties in Paris [2 marks].

Judgement. The statement is partially correct: structural barriers (political short-termism, fossil-fuel interests, climate-justice gaps) HAVE limited ambition. But it understates SIGNIFICANT progress: ~140 net-zero pledges, renewables scaling, EU/UK net-zero legally binding, Loss + Damage Fund existing (even if underfunded), case-study successes (Bangladesh CPP, Netherlands Delta Works, Germany Energiewende). The world is NOT failing absolutely — it is responding INADEQUATELY relative to the speed required. The challenge is closing the ambition gap + delivering climate finance + reforming structures so action does not depend on electoral cycles. Recent CO2 emissions in EU dropped ~8% in 2023 + China's CO2 may peak by 2025 (Carbon Brief) — momentum exists. Honest framing: 'inadequate, not absent' [1 mark].