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ence travel ranged from 0.5 to 2 metric tons.In contrast,the carbon emissions of virtual conferences were less than 1%of that.Second,online conferences offer access to a larger and more diverse audience.The EGU General Assembly 2019 attrac- ted just 16,200 people,while the online EGU General Assembly 2020 had over 26,000 users.Among other things,virtual confer- ences w were born for specific social situations,such as the COV- ID-19 lockdown.A survey by Nature showed that 80%of their interviewees believed that some meetings should continue to be held virtually,even after the lockdown.