Last month we heard again about the need to limit global warming to around 1.5 degrees Celsius above pre-industrial levels. International energy agency outlined a plan to meet this goal and Secretary-General of the United Nations He called on states to think seriously about reducing emissions to make it a reality. That goal is a fantasy. This summer, global warming has already brought average monthly  temperatures that exceeded pre-industrial average by 1.5 degrees It took more than a century for global annual average temperatures to reach their first degree , which happened around 2015. Climate data suggests that the next half-degree is likely to occur early 1930s, if not earlier, and that 2023 will be the warmest year in history. (DAVID G. VICTOR AND VEERABHADRAN RAMANATHAN)