HealthLack of US bird flu tracking in cows may raise risk of human infection The strategy for tracking bird flu in US dairy cattle falls worryingly short of what is needed to prevent the outbreak from widening and potentially spreading to humans ¿ìè¶ÌÊÓÆµ
EnvironmentPlagues that shook the Roman Empire linked to cold, dry periods A study reconstructing the climate of Italy during the Roman Empire based on marine sediments shows that three pandemics coincided with cooler, drier conditions ¿ìè¶ÌÊÓÆµ