As part of Climate Challenge Cymru, 50 pupils from 10 mid and west Wales schools took part in a Climate Youth event at the Senedd this week.
Fel rhan o Her Hinsawdd Cymru, cymerodd 50 o ddisgyblion o 10 ysgol yng nghanolbarth a gorllewin Cymru ran mewn digwyddiad Hinsawdd Ieuenctid yn y Senedd yr wythnos hon.