Biden to 'hit ground running' as he rejoins Paris climate accords

President-elect to block Keystone XL pipeline among other swift environmental moves - but challenges lie ahead

Joe Biden is set for a flurry of action to combat the climate crisis on his first day as US president by immediately rejoining the Paris climate agreement and blocking the Keystone XL pipeline, although experts have warned lengthier, and harder, environmental battles lie ahead in his presidency.

In a series of plans drawn up by Biden's incoming administration for his first day in office, the new president will take the resonant step of bringing the US back into the Paris climate accords, an international agreement to curb dangerous global heating that Donald Trump exited.