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The world is at risk of entering "hothouse" conditions where global average temperatures will be 4-5 degrees Celsius higher even if emissions reduction targets under a global climate deal are met, scientists said in a study published on 6 August 2018. The report comes amid a heatwave that has pushed temperatures above 40C (104 Fahrenheit) in Europe this summer, causing drought and wildfires, including blazes in Greece in July that killed 91 people. Around 200 countries agreed in 2015 to limit temperature rise to "well below" 2C (3.6F) above pre-industrial levels, a threshold believed to be a tipping point for the climate.