The world's food crisis, where 1 billion people are already going hungry and a further 2 billion people will be affected by 2050, is set to worsen as increasing heatwaves reverse the rising crop yields seen over the last 50 years, according to new research.

UN special rapporteur on the right to food champions agroecology as sustainable alternative to existing framework

The existing food system has failed and needs urgent reform, according to a UN expert who argues there should be a greater emphasis on local food production and an overhaul of trade policies that have led to overproduction in rich countries while obliging poor countries – which are often dependent on agriculture – to import food.

WASHINGTON, Oct 27 (Reuters) - The world's governments and relief agencies need to plan now to resettle millions of people expected to be displaced by climate change, an international panel of experts said on Thursday.

Resettlement related to large infrastructure development projects has been occurring for decades, with some estimates of up to 10 million people a year, said the report's lead author, Alex de Sherbinin.