Swedish climate activist Greta Thunberg participating in a conversation with leading climate scientists during the event "Unite behind the science" within the UN Climate Change Conference COP25 at the 'IFEMA - Feria de Madrid' exhibition centre, in Madrid. - AFP
SINGAPORE: Climate change threatens food supplies if extreme weather conditions hit more than one grain producing region at a time, scientists warned on Tuesday (Dec 10).
Weather is a key variable and normally crop losses in one region are compensated by another, helped along by storage and trading systems resilient to short term disruption.
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