The most important number of the climate crisis: 425.2 - atmospheric CO - 2 - in parts per million, 21 July 2024 - 75.2 - above safe level - 27.1 - in past 10 years - 280 - 300 - 320 - 340 - 360 - 380 - 400 - 420 parts per million - 1960 - 1990 - 2014 - 2024 - Safe level: 350ppm - Latest: 425.2ppm - 280 - 300 - 320 - 340 - 360 - 380 - 400 - 420 parts per million - 1960 - 1990 - 2014 - 2024 - Safe level: 350ppm - Latest: 425.2ppm - Source: NOAA. Chart baseline is 280ppm - the preindustrial average. Safe level a stabilisation scenario set out by IPCC. Daily average CO2 value at Mauna Loa.

9 months ago

The age of extinction

2 months ago

Most viewed -- in environment

1 year ago

Most viewed -- Across the guardian

1 year ago

UK watchdog bans coffee pod ads over 'misleading' composting claims

6 hours ago

What caused the blackout in Spain and Portugal and did renewable energy play a part?

21 hours ago

'You sold it – now recycle it': the protesters mailing worn-out clothes to the shops they bought them from

1 day ago

India and Pakistan already sweltering in 'new normal' heatwave conditions

6 hours ago

Tony Blair risks sending absolutely wrong message, says climate expert

37 minutes ago

Climate plan based on phasing out fossil fuels doomed to fail, says Tony Blair

21 hours ago

Fly-tippers' vehicles to be crushed in bid to save England from 'avalanche of rubbish'

13 hours ago

What would reaching net zero mean for life in 2040s Britain?

1 hour ago

'Alarming' bug splat decline on UK cars raises fears for flying insect numbers

2 hours ago

Labour not protecting people, economy and homes from climate crisis, watchdog says

11 hours ago