The planet just recorded its hottest September since at least 1880, according to three of the authoritative temperature-tracking agencies in the world. The data, most of which was released Wednesday, shows that 2020 is on track to be one of the hottest years on record, with the possibility of tying or breaking the milestone for the hottest year, set in 2016. In addition, 2020 is likely to be the hottest year when a La Niña event was present in the tropical Pacific Ocean. This climate phenomenon is characterized by cooler-than-average ocean temperatures near the equator in the central and eastern tropical Pacific, and it tends to lower global temperatures slightly. (El Niño events, on the other hand, add even more heat to the planet, causing temperature spikes on top of global warming.) These trends are all consistent with rapid […]