The group pointed to a media report on how pollution has dropped in China as attempts to stop the virus spreading led to factories being shut down.
Liz Jensen said the sudden death of the 'Nanny McPhee' star aged just 25 is 'every parent's worst nightmare'.
Police said commuters were being investigated over a “vigilante-style attack” at Canning Town station on Thursday.
The activist group caused disruptions by climbing on top of tube carriages.
The Metropolitan Police said the numbers had passed the four figure mark after the first four days of a planned two-week long protest by environmentalists.
The Aer Lingus flight from London City Airport to Dublin was stopped from taking off when the man stood up and 'delivered a lecture' on climate change to fellow passengers on Thursday.
Zion Lights, spokesperson for Extinction Rebellion, told the BBC's Andrew Neil that "alarmist language works" when it comes to making people pay attention to climate change issues.
The 'Good Morning Britain' host accused Skeena Rathor of being a hypocrite for refusing to admit she owns a television.
Heathrow Pause, a splinter group of Extinction Rebellion, said they will fly toy drones at Heathrow Airport on Friday, September 13.
He described the environmental protest group as "anarchism with a smile".
Activists held signs saying "business as usual = death" and "don't jail the canaries”.
Demonstrations have been taking place at Parliament Square, Waterloo Bridge, Oxford Circus and Marble Arch this week.