Scientists across the globe are at work yet again, dealing with the Malthusian apprehensions of likely food shortages from rising population pressures on land. Thomas Robert Malthus, who expounded his theory in the 19 th century, is no more, but his warnings still ring prophetic. Around mid-20 th century, scientists had responded to the warnings by ushering in the Green Revolution that pushed yields. Today, the world, facing another food crisis, awaits another long-term solution to the problem.