Humanitarian crises appear dramatic, overwhelming and sudden, with aid required immediately to save lives. Whereas climate change is about changing hazard patterns and crises are in reality rarely unexpected, with academic researchers and humanitarian and development organisations warning about possible risks for months before they take place.

As global temperatures continue to rise, droughts are expected to become more frequent and severe in many regions during this century.

Researchers have just issued three separate climate warnings to the citizens of Europe on the same day, in three different journals – a triple risk salvo.

Sorghum is the fifth most economically important cereal in the world and is grown in some of the most arid parts of Africa and South Asia, where it is a staple food for half a billion people.

A campaign to plant trees to compensate for the impact of President Trump's climate policies has 120,000 pledges.

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