Division number 215 – in the House of Commons on 26 Ionawr 2021.
A majority of MPs disagreed and wedi pleidleisio not to require a target for particulate matter under 2.5 micrometres in diameter in the air to be set at a level of less ten micrograms per cubic meter, to be in-line with World Health Organisation guidelines and to be met by 2030 at the latest.
Eisiau deall mwy am y bleidlais hon? Darllenwch y ddadl yr oedd yn rhan ohoni.