EnvironmentAncient Roman air pollution caused climate change in Europe The Roman Empire produced so much air pollution from fires in homes and on farms that it had a detectable cooling effect on the regional climate 51¶¯Âþ
HumansStory of most murderous people of all time revealed in ancient DNA Starting 5000 years ago, the Yamnaya embarked on a violent conquest of Europe. Now genetic analysis tells their tale for the first time Features