ZAQS.ORG

Thursday, May 14, 2026 10:57 AM ET

Guardian UK - Environment

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.

1 year ago

The age of extinction

1 year ago

Most viewed -- in environment

2 years ago

Most viewed -- Across the guardian

2 years ago

How a kindergarten teacher became the accidental guardian of 200 king penguins

3 hours ago

Salmon farm faces new cruelty claims as Trump seeks to supersize fish farming

2 hours ago

Smuggled in syringes: how Nairobi became a nexus for the black market in giant harvester ants

1 day ago

Farage's Clacton-on-Sea constituency worst 'tree desert' in England, research shows

9 hours ago

Typical English roast dinner potentially 'drenched' in 102 pesticides, says report

15 hours ago

Choughs reappear at Tintagel Castle in Cornwall after decades of absence

10 hours ago

Swift bricks to be installed on all new buildings in Scotland as MSPs back law

55 minutes ago

'You have to be where the pollution is': the inventor hoping to fix your washing machine to stop microplastics

1 day ago

The global sand crisis: it's being used up faster than it can be replaced

2 days ago

Newborns to silverbacks: counting mountain gorillas in Uganda – in pictures

4 days ago