Delhi

City in India.

At a glance

Source	Author	Role	In one line
Not the End of the World	Hannah Ritchie	subject	Delhi’s winter pollution is the case for why the 2016 and 2019 ‘odd-even’ car rules only cut pollution by 5% and 13%.

Not the End of the World — Hannah Ritchie (2024)

Source: Not the End of the World · Readwise highlight

Delhi’s average concentration of tiny particulates – those smaller than 2.5 micrometres – is twenty times higher than the WHO guidelines. In winter, things get even worse.

• Role: subject
• In the book: Delhi’s winter pollution is the case for why the 2016 and 2019 ‘odd-even’ car rules only cut pollution by 5% and 13%. The text says cars were only about 4% of the winter PM2.5, with crop-burning, industry, dust and generators bigger sources.
• Why it matters: Delhi shows that fixes must target the real sources of pollution; it also anchors the later India crop-burning section.