In recent years, over 70 countries have committed to net-zero carbon emissions, aiming to become carbon neutral by mid-century. The 2015 Paris Agreement aimed to keep global warming below 2 degrees Celsius and ideally limit it to 1.5 degrees above pre-industrial levels. Despite global efforts, emissions are still rising, and achieving the 1.5-degree goal has become increasingly difficult.

Most pathways to keep warming below 2 degrees, and eventually return back to 1.5 rely on negative emissions, which involve pulling carbon dioxide from the atmosphere using carbon dioxide removal (CDR) methods like enhanced weathering and direct air capture.

However, these techniques are still in early development stages, and require land, energy, and money. Critics argue that relying on CDR implicitly encourages governments and companies to postpone necessary emissions reductions because counting on CDR now means relying on future generations of leaders to deliver on those promises. Preventing emissions is broadly less costly than cleaning them up after the fact. But even with dramatic cuts to emissions, experts say some amount of CDR will still be necessary.
近年来，已有70多个国家承诺实现净零碳排放，目标是到本世纪中叶实现碳中和。2015年的《巴黎协定》旨在将全球变暖控制在2摄氏度以下，理想情况下将其***在比工业化前水平高1.5摄氏度。尽管全球都在努力，但排放量仍在上升，实现1.5度的目标变得越来越困难。

大多数将升温控制在2度以下并最终回到1.5度的途径都依赖于负排放，这包括使用二氧化碳去除(CDR)方法从大气中吸收二氧化碳，如增强风化和直接空气捕获。

然而，这些技术仍处于早期发展阶段，需要土地、能源和资金。批评人士认为，依赖CDR会暗中鼓励***和企业推迟必要的减排，因为现在依赖CDR意味着依赖未来几代***兑现这些承诺。防止排放比事后清理成本要低得多。但专家们表示，即使大幅减排，一定数量的CDR仍是必要的。

ps: Joss Fong的声音好好听！大家快来试一下吧！😆