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...

Seven Indian Institutes of Technology (IITs) have plunged into a government effort to clean the Ganga, promising to recommend a slew of river management and technology strategies to improve its ecological health. The 2500km Ganga is one of the country’s most polluted rivers laced with sewage and city waste although the government has spent about Rs 900 crore over the past two decades on a clean-up plan initiated in the late-1980s. An...

As a schoolboy I spent many of my summer vacations in the searing heat of Sarangarh. In this small town (kasba describes it best) in Chhattisgarh, bordering Orissa, I saw multiple instances of the practice of “untouchability”. Not perhaps in its most heinous form, but visible and clear to a child’s eyes; for example, someone merely touching the water pot made the water immediately undrinkable, impure. This was the late...

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...

Long-term greedy is a term that a Goldman Sachs partner made famous, by way of self-definition . It is as good a description as any of making profits in a sustainable fashion. Lafarge displayed short-term greed when it violated the law in obtaining forest clearance for a limestone mining project in Meghalaya’s Khasi hills, to supply raw material for its own cement plant in neighbouring Bangladesh. It described the mining...