Tackling climate change
FoundationResponse runs on mitigation and adaptation. The 2015 Paris Agreement aims to hold warming well below 2 degrees, striving for 1.5; China pledges carbon neutrality before 2060, and Hong Kong before 2050 with a 2035 half-cut — while each of us can start with energy saving, public transport and less waste.
- Two legs: mitigation for causes (emissions cuts), adaptation for effects (seawalls, warnings)
- Paris Agreement (2015): well below 2 degrees, striving for 1.5; pledges reviewed every five years
- China before 2060; Hong Kong before 2050 with a 2035 half-cut against 2005
文體小知識：政策分析課：國際（巴黎協定）、國家（碳中和承諾）、城市（香港氣候行動藍圖）到個人（低碳生活）四層遞進，層層有例子。
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1Tackling climate change runs on two legs: mitigation and adaptation. Mitigation attacks the causes — cutting emissions and adding carbon sinks; adaptation copes with the consequences — adjusting infrastructure and lifestyles to changes already locked in. Both are needed: without mitigation, adaptation never catches up; without adaptation, the warming already underway still does damage.
2Internationally, the 2015 Paris Agreement was a milestone: nearly 200 parties agreed to hold warming well below 2 degrees Celsius above pre-industrial levels, striving for 1.5, with each country submitting 'nationally determined contributions' reviewed and raised every five years. The deal relies on consensus rather than force, so success depends on delivery. China pledges to peak emissions before 2030 and reach carbon neutrality before 2060; the EU, the USA and Japan among others have pledged net zero by 2050.
3At the city level, Hong Kong's Climate Action Plan 2050 targets carbon neutrality before 2050 and halving emissions by 2035 against 2005, through four strategies: 'net-zero electricity' (phasing out coal, more gas, developing renewables), 'energy-saving green buildings' (buildings take about 90% of the city's electricity, so efficiency labels and green certification matter), 'green transport' (electric buses, railway expansion, an EV roadmap) and 'waste reduction' (charging for waste, food-waste recycling). For adaptation: higher seawalls, better stormwater drainage and upgraded rainstorm and storm-surge warnings.
4Individually, choices count: switching off lights and choosing efficient appliances, riding public transport instead of driving, wasting less food and less plastic, recycling more. Millions of daily choices decide whether the plan's 'waste reduction' and 'energy saving' targets are met. From treaties to habits, every level matters — the landing point of this S2 geography journey: understand the Earth system, then live responsibly within it.
1Summary 重點摘要
Response runs on mitigation and adaptation. The 2015 Paris Agreement aims to hold warming well below 2 degrees, striving for 1.5; China pledges carbon neutrality before 2060, and Hong Kong before 2050 with a 2035 half-cut — while each of us can start with energy saving, public transport and less waste.
2Vocabulary cards Vocabulary
The 2015 climate treaty in which nearly 200 parties pledged to hold warming well below 2 degrees Celsius, striving for 1.5.
Each country's own emissions pledge, reviewed and raised every five years — the core mechanism of the Paris Agreement.
Balancing emitted and absorbed greenhouse gases for a net of zero; China targets before 2060, Hong Kong before 2050.
The turning point when emissions peak and start to fall; China pledges to peak before 2030.
Cutting emissions and adding sinks to attack the causes of climate change.
Adjusting infrastructure and lifestyles to impacts already unavoidable, such as higher seawalls.
Hong Kong's strategy of phasing out coal and moving to zero-carbon power with gas and renewables.
Buildings designed to save energy and water; they take about 90% of Hong Kong's electricity, making them central to cuts.
Hong Kong's roadmap: carbon neutrality before 2050, halving emissions by 2035 from 2005.
3Step by step Steps
- Para 1: mitigation and adaptation, two tracksResponses to climate change run on two tracks. Mitigation attacks the causes — cutting emissions and planting trees that absorb carbon dioxide — to slow warming at the source; adaptation deals with the consequences, adjusting through seawalls and warning systems so impacts already under way do less harm. Phasing out coal power is mitigation; raising coastal seawalls is adaptation. The motto: mitigation treats causes, adaptation treats effects — the two complement each other and neither can be dropped.
- Para 2: the Paris Agreement frameworkThe Paris Agreement, signed in 2015 by nearly 200 parties, aims to hold global warming well below 2 degrees Celsius and strive for 1.5; countries submit their own nationally determined contributions, reviewed and strengthened every five years. The gap between 1.5 and 2 degrees looks slight yet decides the survival of coral reefs and how many tens of millions are exposed to extreme heat — every half-degree matters.
- Para 2: the big powers' pledges and progressThe big economies' pledges decide whether global emission cuts succeed. China promises to peak carbon before 2030 and reach neutrality before 2060; the EU, the USA and Japan target net zero by 2050. China already accounts for over half the world's newly installed wind and solar capacity and is the largest investor in renewables, showing that cutting emissions and developing can go together. Still, a gap remains between pledges and delivery, calling for continued monitoring and accountability.
- Para 3: Hong Kong's four strategiesHong Kong's climate action plan rests on four strategies: net-zero electricity, shifting step by step from coal to natural gas while developing renewables; energy-saving green buildings, since buildings take about 90% of the city's electricity, making mandatory energy labels and green building certification key tools; green transport, with no new registration of fuel private cars from 2035; and community-wide waste reduction, cutting landfill methane through reducing waste at source and food-waste recycling.
- Para 3: Hong Kong's adaptationOn adaptation, Hong Kong pairs engineering with warning: higher and stronger seawalls, tougher design standards for coastal facilities and better stormwater drainage against torrential rain, while the Observatory issues rainstorm, storm-surge and very-hot weather warnings so residents can prepare early. After Mangkhut's widespread damage in 2018, the government reviewed coastal facilities and built added protection — extreme weather is the real-world test of adaptation.
- Para 4: four personal movesIndividuals can act on four fronts: save energy by choosing LED lights and top-grade energy-label appliances; travel green by riding MTR and buses, or walking short trips; cut waste by carrying your own bottle and shopping bag and sorting food waste for recycling; consume wisely by picking local, seasonal food to trim transport emissions. The landing point of climate action is here — from understanding the problem to changing habits, everyone can play a part.
4Diagrams Diagrams
5Worked example Example
Example: compare mitigation and adaptation, give one Hong Kong example of each, and explain why both must proceed together.
- Mitigation defined with example: cutting emissions to attack causes — Hong Kong phasing out coal units, pushing EVs and efficient buildings
- Adaptation defined with example: adjusting to impacts already here — higher seawalls, better drainage, hot-night warnings and cooling centres
- Why both: adaptation without mitigation faces endlessly rising impacts; mitigation without adaptation still suffers the warming already locked in, with seas still rising
- International echo: the Paris Agreement pairs national emissions pledges (mitigation) with adaptation finance for developing countries
- Answer: Mitigation treats causes (coal phase-out, EVs); adaptation treats effects (seawalls, drainage, cooling centres). Warming has inertia — emission cuts take decades while adaptation saves lives now, so both must run together. Tip: structure comparisons as definition, example, then relationship.
6Common mistakes Mistakes
7Quick check Quick check
Q1What is the Paris Agreement's core temperature goal?
Q2By when do China and Hong Kong pledge carbon neutrality?
Q3Distinguish mitigation from adaptation with one example each.
Q4What are the four strategies of Hong Kong's Climate Action Plan?
Q5Name three low-carbon actions a student can take.
8Recap Recap
- Two legs: mitigation for causes (emissions cuts), adaptation for effects (seawalls, warnings)
- Paris Agreement (2015): well below 2 degrees, striving for 1.5; pledges reviewed every five years
- China before 2060; Hong Kong before 2050 with a 2035 half-cut against 2005
- Hong Kong's four strategies: net-zero electricity, green buildings, green transport, waste reduction
- Three personal moves — save energy, travel green, cut waste — from understanding the Earth to living responsibly