- Electric vehicles (EVs) — sales are growing (10% of new cars in 2023) but need to reach 100% by 2035
- Public transport (trains, buses, trams)
- Cycling and walking
- Reduce flying (aviation is hard to decarbonise)
3. Improve energy efficiency
Buildings account for 30% of emissions (heating, cooling, lighting). Solutions:
- Insulate homes (reduces heating demand)
- Heat pumps (replace gas boilers)
- LED lighting (uses 80% less energy than incandescent bulbs)
4. Reduce meat consumption
Livestock accounts for 14.5% of emissions (methane from cows, land use). Solutions:
- Eat less meat (especially beef)
- Plant-based diets (vegan, vegetarian)
- Lab-grown meat (still experimental)
5. Protect forests
Forests absorb CO2, so protecting and restoring forests is critical. Solutions:
- Stop deforestation (especially in Amazon, Congo, Indonesia)
- Reforestation (plant trees)
- Sustainable forestry (manage forests for carbon storage)
6. Carbon capture
Carbon capture technology removes CO2 from the atmosphere. Solutions:
- Direct air capture (machines suck CO2 from air)
- Carbon storage (inject CO2 underground)
- Natural carbon sinks (forests, soil, oceans)
Carbon capture is expensive and unproven at scale, but it may be necessary to reach net zero.
The UK's Role
The UK has committed to net zero by 2050 and has made progress:
- Emissions down 50% since 1990 (from 800 million tonnes to 400 million tonnes)
- Coal phased out (last coal power station closes 2024)
- Renewables provide 40% of electricity (wind, solar, nuclear)
But the UK is not on track to meet its targets. More action is needed:
- Insulate 19 million homes (currently 60% have poor insulation)
- Ban petrol/diesel cars by 2030 (currently 2035)
- Invest in public transport (trains, buses, cycling)
- Stop new oil and gas (UK is still licensing new North Sea oil and gas)
The Bottom Line
Global temperatures have risen 1.2°C since pre-industrial times (1850), with 2023 the hottest year on record at 1.48°C above baseline. CO2 levels are 420 ppm (parts per million), up from 280 ppm in 1850, caused by burning fossil fuels (coal, oil, gas) releasing 37 billion tonnes CO2 per year. The Paris Agreement aims to limit warming to 1.5°C (ideally) or 2°C maximum, but current policies put us on track for 2.7°C by 2100. Consequences include: sea level rise (threatening 200 million people), extreme weather (heatwaves, floods, droughts), ecosystem collapse, and food/water shortages. Net zero by 2050 requires: phasing out fossil fuels, switching to renewables (wind, solar, nuclear), electrifying transport, and carbon capture technology. Climate change is real, human-caused, and catastrophic if we do not act. The science is clear, the evidence is overwhelming, and the consequences are already visible. We have the technology to solve it (renewables, EVs, energy efficiency), but we lack the political will. The window is closing — we must cut emissions 50% by 2030 and reach net zero by 2050 to avoid catastrophe. This requires phasing out fossil fuels, switching to renewables, electrifying transport, and protecting forests. Individual action matters, but systemic change is essential — governments and corporations must act. The future of civilisation depends on it.
Key takeaways
- Global temperatures have risen 1.2°C since pre-industrial times (1850), with 2023 the hottest year on record at 1.48°C above baseline
- CO2 levels are 420 ppm (parts per million), up from 280 ppm in 1850, caused by burning fossil fuels (coal, oil, gas) releasing 37 billion tonnes CO2 per year
- The Paris Agreement aims to limit warming to 1.5°C (ideally) or 2°C maximum, but current policies put us on track for 2.7°C by 2100
- Consequences include: sea level rise (threatening 200 million people), extreme weather (heatwaves, floods, droughts), ecosystem collapse, and food/water shortages
- Net zero by 2050 requires: phasing out fossil fuels, switching to renewables (wind, solar, nuclear), electrifying transport, and carbon capture technology
Sources
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