US President Donald Trump's position on climate change has been in the spotlight again, after he criticised "prophets of doom" at the World Economic Forum in Davos.

At the event, which had sustainability as its main theme, and activist Greta Thunberg as its star guest, Mr Trump dismissed "alarmists" who wanted to "control every aspect of our lives" - while also expressing the US's support for an initiative to plant one trillion trees.

Read more at BBC News.