United States

World hunger is on the rise again, and climate change is a culprit

Some 821 million people now face food insecurity, raising numbers to the same level as almost a decade ago. The situation is worsening in South America, Central Asia and most regions of Africa, according to the UN's annual food security report. A resurgence in the use of "cover crop" and nanotechnologies may mitigate climate change impacts.

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