Here Are Some Of The Best Signs From The Global Youth Strike For Climate Action

Protests have taken place around the world calling for action to avert environmental catastrophe.

From London to Sydney, here's a look at some of the millions of people joining the global youth climate strike.

A 'polar bear' joined children from the Terra Nova secondary school in Cheshire to demand action to stop global warming (Peter Byrne/PA)

A protester at Millbank in London held up a poster of climate activist Greta Thunberg (Gareth Fuller/PA)

Thousands gathered on the unseasonably hot September day in Victoria Park Gardens to warn against global warming (Jonathan Brady/PA)

A younger protester needed a lie-down as handmade posters warned of the need to tackle climate change (Gareth Fuller/PA)

Students at a large protest in Manchester expressed their anger at Donald Trump (Peter Byrne/PA)

There was a big turn-out at the protest in Cambridge (Joe Giddens/PA)

Protesters in the city later held a 'die-in' to warn about the threat to the planet (Joe Giddens/PA)

Young and old also took to the streets of Birmingham (Jacob King/PA)

Protesters in Cullercoats, Tyneside, staged their protest at the seaside (Owen Humphreys/PA)

Pupils from Colaiste Bride School made their point with striking posters at a protest in Dublin (Brian Lawless/PA)

Thousands of miles away in the Philippines, activists displayed their message in front of 'a human globe' formation (Bullit Marquez/AP)

South Korean protesters held portable LED lamps to show the need for renewable energy (Lee Jin-man/AP)

In India, young protesters gathered outside the Ministry of Housing and Urban Affairs in New Delhi (Manish Swarup/AP)

Activists blocked a road in Frankfurt, Germany, during rush hour (Michael Probst/AP)

A large inflatable globe was bounced through the crowd as thousands protested in Sydney (Rick Rycroft/AP)

People shared some of their favorite signs on Twitter as well: