“Climate science is clear: we are heading in the wrong direction”, declares a major, multi-agency UN climate science report released on Tuesday, with a focus on increasing fossil fuel emissions and rising greenhouse gases, now at a record high, which risk thwarting plans to reduce global temperatures and avoid climate catastrophe.

The researchers behind “Uniting in Science”, coordinated by the World Meteorological Organization (WMO), studied several factors related to the climate crisis – from CO2 emissions, global temperature rises, and climate predictions; to “tipping points”, urban climate change, extreme weather impacts, and early warning systems.

One of the key conclusions of the report is that far more ambitious action is needed, if we are to avoid the physical and socioeconomic impacts of climate change having an increasingly devastating effect on the planet.

Greenhouse gas concentrations continue to rise to record highs, and fossil fuel emission rates are now above pre-pandemic levels, after a temporary drop due to lockdowns, pointing to a huge gap between aspiration and reality.

Cities, hosting billions of people, are responsible for up to 70 per cent of human-caused emissions: they will face increasing socio-economic impacts, the brunt of which will be faced by the most vulnerable populations.

In order to achieve the goal of the Paris Agreement, namely keeping global temperature rises to 1.5 degrees Celsius above pre-industrial levels, greenhouse gas emission reduction pledges need to be seven times higher, says the report.