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The IPCC has admitted that its RCP8.5 high-emissions climate scenario was wrong, showing that UN climate projections are unreliable.

The IPCC issued a statement on 20 May 2026 saying the opposite: it does not own or create climate scenarios, and it called none of them wrong. The high-emissions scenario was revised downward by a separate group of modelling scientists, who describe it as a "what if" tool, not a failed prediction.

The extreme heatwaves that hit Europe and North America in mid-2026 were deliberately engineered by HAARP, a US military weather-manipulation program, rather than caused by climate change.

Viral posts blamed the record mid-2026 heat in Europe and North America on HAARP, a supposed US military weather weapon. HAARP's radio transmitter radiates about 3.6 megawatts into the ionosphere at roughly 100 km altitude — less than a single 5 MW wind turbine generates, at frequencies that are not absorbed in the troposphere or stratosphere where weather actually forms. Meanwhile World Weather Attribution found on 26 June 2026 that the European heatwave's daytime temperatures were about 3.5°C hotter than an identical event would have been in the 1976 climate.