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.

Indonesia's double disaster exposes earthquake lessons not learned

The 7.5-magnitude earthquake that struck Indonesia on Sept. 28, triggered a tsunami and extensive soil liquefaction, killing 2,073 people according to the latest official estimate. Up to 5,000 more may be missing. All the destruction and loss of life have left many wondering why Indonesia — a country prone to earthquakes — wasn't more prepared.

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