Nature & Environment
Climate change and renewable energy
...business as usual’ scenario). Carbon dioxide emissions need to fall rapidly to limit warming to 1.5 °C by 2100 (Figure 12(a)), and even to keep below 2 °C warming (Figure 12(b)). For 1.5 °C, this means reaching net zero by around 2050 and then falling further below net zero (meaning that more carbon dioxide would need to be absorbed or captured from the atmosphere...