Oceans, biodiversity, deforestation: what's on the climate agenda for 2020?

This year could be crucial in determining the response to the environmental crises

World leaders and business chiefs meeting in Davos this week will be confronted for the first time with an agenda on which the climate and ecological crises take top billing. Financial and economic concerns have been shunted down the list of priorities in favour of five environmental issues: climate breakdown and extreme weather; failure to mitigate or adapt to climate change; human-made pollution; biodiversity loss and ecosystem collapse; and natural disasters such as earthquakes, tsunamis and volcanic eruptions.

Green campaigners and social and human rights activists have been raising concerns on all of these for more than two decades, but it seems that finally the world's powers are paying attention. In some cases it may be too late to act to avoid the consequences of the delay in taking action.