Marchers protest against climate policies on Trump's 100th day in office
Thousands of people across the US have marched to demand action on climate change on Donald Trump's 100th day in office
In Washington DC, large crowds made their way down Pennsylvania Avenue in sweltering heat and planned to encircle the White House.
Organisers say about 300 other protest marches are expected around the country.
Participants in the Peoples Climate March said they're objecting to Mr Trump's roll-back of restrictions on mining, oil drilling and greenhouse gas emissions at coal-fired power plants, among other things.
In Augusta, Maine, protesters outside the statehouse said they wanted to draw attention to the damage climate change can cause marginalised communities.
A demonstration stretched for several blocks in the centre of Tampa, Florida, where marchers said they were concerned about the threat rising sea levels pose to the city.
In Boston, a crowd gathered in a public park and carried signs with slogans such as "Dump Trump".