[The European climate service Copernicus says Earth just sweltered to its hottest summer on record] Summer 2024 sweltered to Earth's hottest on record, making it even more likely that this year will end up as the warmest humanity has measured, European climate service Copernicus reported Friday. And if this sounds familiar, that's because the records the globe shattered were set just last year as human-caused climate change, with a temporary boost from an El Nino, keeps dialing up temperatures and extreme weather, scientists said. The northern meteorological summer — June, July and August — averaged 16.8 degrees Celsius (62.24 degrees...