An anonymous reader shares a report: The US is leading a huge global surge in new gas-fired power generation that will cause a major leap in planet-heating emissions, with this record boom driven by the expansion of energy-hungry datacenters to service AI, according to a new forecast. This year is set to shatter the annual record for new gas power additions around the world, with projects in development expected to grow existing global gas capacity by nearly 50%, a report by Global Energy Monitor (GEM) found. The US is at the forefront of a global push for gas that is set to escalate over the next five years, after tripling its planned gas-fired capacity in 2025. Much of this new capacity will be devoted to the vast electricity needs of AI, with a third of the 252 gigawatts of gas power in development set to be situated on site at datacenters. All of this new gas energy is set to come at a significant cost to the climate, amid ongoing warnings from scientists that fossil fuels must be rapidly phased out to avoid disastrous global heating.

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The Bulletin of the Atomic Scientists on Tuesday set their symbolic Doomsday Clock to 85 seconds before midnight -- the closest the timepiece has ever been to the theoretical point of annihilation since scientists created it during the Cold War in 1947. The clock now stands four seconds nearer than last year's setting, and this marks the third time in four years that the Bulletin has moved it closer to midnight. The Chicago-based nonprofit pointed to aggressive behavior by nuclear powers Russia, China and the United States, fraying nuclear arms control frameworks, ongoing conflicts in Ukraine and the Middle East, unregulated AI integration into military systems, and climate change. "In terms of nuclear risks, nothing in 2025 trended in the right direction," said Alexandra Bell, the Bulletin's president and CEO. The last remaining nuclear arms pact between the US and Russia, the New START treaty, expires on February 5.

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Nearly 3.8 billion people could face extreme heat by 2050 and while tropical countries will bear the brunt cooler regions will also need to adapt, scientists said Monday. From a report: Demand for cooling will "drastically" increase in giant countries like Brazil, Indonesia and Nigeria, where hundreds of millions of people lack air conditioning or other means of beating the heat. But even a moderate increase in hotter days could have a "severe impact" in nations not used to such conditions like Canada, Russia and Finland, said scientists from the University of Oxford. In a new study, they looked at different global warming scenarios to project how often people in future might experience temperatures considered uncomfortably hot or cold. They found "that the population experiencing extreme heat conditions is projected to nearly double" by 2050 if global average temperatures rise 2C above preindustrial times.

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