With 2024 set to go down as the hottest year on record, we know that what is coming is truly horrifyingThe past 12 months have seen our world enter new territory. Last year will go down as the first time that the global average temperature exceeded 1.5C above preindustrial times over a calendar year. We could crash permanently through the 1.5C guardrail within the next five years, and shatter the 2C limit as soon as 2034. This will almost certainly result in the tipping points for collapse of the Greenland and west Antarctic ice sheets being crossed, committing us to the drowning of coastal towns and cities.In years to come, we will look back at this time and ask the same question that future generations will ask: why didn’t we stop this catastrophe?Bill McGuire is professor emeritus of geophysical and climate hazards at UCL and author of Hothouse Earth: an Inhabitant’s GuideRoger Hallam is co-founder of Extinction Rebellion, Insulate Britain and Just Stop OilDo you have an opinion on the issues raised in this article? If you would like to submit a response of up to 300 words by email to be considered for publication in our letters section, please click here. Continue reading...