July 10th, 2024

Last summer was the hottest in 2k years

Researchers found the summer of 2023 in the Northern Hemisphere to be the hottest in over 2,000 years. Various methods like tree rings and fossils were used to compare past and current climate conditions, emphasizing the need to address climate change promptly.

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Last summer was the hottest in 2k years

Researchers have determined that the summer of 2023 in the Northern Hemisphere was the hottest in over 2,000 years. They used various methods like tree rings, glaciers, and fossil records to compare current climate conditions with those of the past. By analyzing tree rings, scientists can estimate past temperatures based on factors like growth patterns and chemical signatures in the wood. The study involved over 10,000 trees from nine regions in the Northern Hemisphere, allowing for conclusions about temperatures over the past two millennia. While tree rings provide detailed data for the last couple of thousand years, other methods like ice cores and fossils offer insights into Earth's temperature history dating back millions of years. The findings highlight the urgency of addressing climate change by reducing emissions promptly to mitigate further warming. The study underscores the importance of understanding historical climate trends to inform future actions in combating global warming.

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By @BenFranklin100 - 5 months
In my view, the moral sentiment in the top comment on the previous discussion (see https://news.ycombinator.com/item?id=40414932) represents why progress on global warming is slow.

It’s not realistic for humans to use less energy. It’s especially not realistic given that a huge fraction of the world’s population still lives in the developing world and lacks basics like modern hospitals, schools, a reliable electric grid, i.e. things we taken for granted in the West. I don’t think, say, Indians are bad people for wanting air conditioning.

Instead of counterproductive moralizing, the focus has to be on how to grow energy production while decoupling this growth with CO2 emissions. We are making progress with renewables but more is required. We cannot, as some claim, bury our heads and hope solar will save the day. Specifically, heavy investments in nuclear are needed. Nuclear energy, unfortunately, is an area that has encountered moralizing, quasi-religious opposition from too many environmental groups. What is needed is a rational discussion that acknowledges today’s nuclear plant designs are better, and if built at scale, cheaper than in the past

We have the technology to solve the problem. We just need the political will to acknowledge the reality that energy use needs to grow and how best do we manage this growth.

By @ChrisArchitect - 5 months