In numbers

13%

The proportion of people who are pathological liars (classified as telling around 10 lies a day), a study at Angelo State University has found.

710 MILLION

The amount, in tonnes, of plastic pollution predicted to be in the world by 2040, according to a study a group of international researchers published in the journal Science.

50%

The drop in human-linked vibrations in the 'arth due to the COVID-19 lockdown between March and May 2020, as calculated by seismologists at Imperial College London.