The term "global security" often evokes images of guns and nuclear weapons. "We have inherited a definition of security from the last century, which was dominated by two World Wars and the Cold War," Lester Brown, author and president of the Earth Policy Institute told PRI's Here and Now. "What we're now faced with is a need to re-define security."
The biggest threats to our future aren't coming from invading nations, according to Brown. "It is climate change. It is population growth. It is falling water tables. It is rising food prices. It is failing states."
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