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Science Cannot Stop Global Warming

With current efforts or those committed to under the Paris agreement, there is absolutely no chance that humanity will limit the warming of the Earth’s surface to an average of 1.5 degrees Celsius. This finding emerges from a special report of the Intergovernmental Panel on Climate Change (IPCC) on 1.5 degrees released on Monday 8 October 2018. It will take extraordinary effort to  achieve this target, a real change of track. At the same time, climate  change will bring a dramatic rise in extreme events, a sea level rise that will be much larger if we continue heating our planet unabated  rather than halt the temperature increase. The sea level rise will  continue over centuries as Greenland and Antarctic glaciers slowly  disintegrate and the ocean slowly absorbs more heat and expands. The consequences for coastal cities home to hundreds of millions will be dramatic as storm surges rise. The  IPCC speaks with a clear voice of the threats to lives, physical  infrastructure, ecosystems, and associate economic cost but does not  quantify the consequences of political collapse, civil strife and war  that may quite well arise from a hothouse Earth.

Breezy Point, New York, in the wake of Hurricane Sandy 2012. The massive storm surge caused billions of damage in New York and New Jersey. Picture: NOAA

Breezy  Point, New York, in the wake of Hurricane Sandy 2012. The massive storm  surge caused billions of damage in New York and New Jersey. Picture: NOAA

Halting climate change is not impossible, as the new report shows.  Technology is a key ingredient that offers us many possibilities;  however, naïve faith in technology has also lulled us into complacency  and blinded us to the social, political, and economic actions we need to  take if we want to kick our carbon habit.

Marching for the Climate. Photo credit: Mark Dixon, Flickr.

When I started my scientific career in the 1990s, one could still  make the argument that we did not fully understand the climate  consequences of choices we needed to make, that low-carbon technologies  were not mature and required further development, that better science  and engineering was required. Today, we exactly know what to do, as the  1.5°report reiterates, but our actions remain inadequate. It is time to  change that.

About the author

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Edgar Hertwich

I am professor of industrial ecology at the Norwegian University of Science and Technology.

October 07, 2018