Earth at risk of 'hothouse climate' where efforts to reduce emissions will have no impact, study finds

If humans cause the earth's global average temperature to increase by a further 1 degree Celsius, the world could face a "hothouse" climate and trigger further warming — even when all human emissions cease, an international study has found.

Australia needs to stop pretending it is tackling climate change.

The study titled Trajectories of the Earth System in the Anthropocene, which involved researchers from around the world, was published in the international journal Proceedings of the National Academy of Sciences of the United States of America (PNAS).

It found the Earth was heading for a tipping point, known as a "hothouse" climate, which could lead to average temperatures up to 5C higher than pre-industrial temperatures and rises in sea level of between 10 and 60 metres.

Lead researcher Professor Will Steffen from the Australian National University (ANU) said at that point much of the earth would be uninhabitable.

Read the ABC News story by Elise Pianegonda -  “Earth at risk of 'hothouse climate' where efforts to reduce emissions will have no impact, study finds.”