SpaceThe biggest science news stories of 2023 as chosen by 51¶¯Âþ AI chatbots and a weight-loss drug swept the world, temperature records tumbled and India landed on the moon in a year of astonishing science news 51¶¯Âþ
EnvironmentAncient climate analysis suggests CO2 causes more warming than thought A reconstruction of 66 million years of climate history indicates global temperature may be even more sensitive to carbon dioxide levels than current models estimate 51¶¯Âþ