Complexity and unsolved problems are at the very heart of the sustainability challenge, and at the very heart of M.S. Swaminathan's thinking and essays. In 1798, Thomas Robert Malthus offered the piercing insight that geometric population growth would inevitably outstrip food production, leaving society destitute and hungry. Since that time, our optimism of beating the “Malthusian curse” has waxed and waned. Few people in modern history have done more to help...

A crop-killing fungus is spreading out of Africa towards the world’s great wheat-growing areas IT IS sometimes called the “polio of agriculture”: a terrifying but almost forgotten disease. Wheat rust is not just back after a 50-year absence, but spreading in new and scary forms. In some ways it is worse than child-crippling polio, still lingering in parts of Nigeria. Wheat rust has spread silently and speedily by 5,000 miles in...

The revolution of the 1960s saved decades worth of greenhouse gas emissions. The Green Revolution of the 1960s raised crop yields and cut hunger — and also saved decades worth of greenhouse gas emissions, a study concludes. U.S. researchers found cumulative global emissions since 1850 would have been one third as much again without the Green Revolution's higher yields. Although modern farming uses more energy and chemicals, much less land needs...

Amflora is a kind of miracle potato: it is precious to the starch industry.  Johan Bergstrom, a blond and boyish man of 31, who farms here with his father, reached into the dark, soft soil and extricated a tennis-ball-size potato, holding it gently so as not to snap off any of a half-dozen white shoots that were growing out of the potato's eyes. He advised against tasting the potato, whose...

For us, it was Eveready. During my growing-up years in Bhopal, where my father was posted, the Union Carbide factory was not too far from our place off the railway colony. It was not an object of interest or curiosity because it looked just like the humungous power station opposite our house. Nobody could figure out why it was called Eveready although the plant was set up to make pesticides and...