\n<\/p>\n
Feeding a growing world population has been a serious concern for decades, but today there are new causes for alarm. Floods, heat waves and other weather extremes are making agriculture increasingly precarious, especially in the Global South<\/a>.<\/p>\n The war in Ukraine is also a factor. Russia is blockading Ukrainian grain exports<\/a>, and fertilizer prices have surged<\/a> because of trade sanctions on Russia, the world\u2019s leading fertilizer exporter.<\/p>\n Amid these challenges, some organizations are renewing calls for a second Green Revolution<\/a>, echoing the introduction in the 1960s and 1970s of supposedly high-yielding varieties of wheat and rice into developing countries, along with synthetic fertilizers and pesticides. Those efforts centered on India and other Asian countries; today, advocates focus on sub-Saharan Africa<\/a>, where the original Green Revolution regime never took hold.<\/p>\n