Standing on the shimmering white beach and gazing out at the turquoise blue waters of the Arabian sea, it is hard to believe that a decade ago this international tourist destination was under siege by mounting heaps of garbage. But Kovalam, about 12 km north of Thiruvananthapuram, capital of southern Kerala state, has been declared a ‘zero waste area’ by a women’s self-help group (SHG) which is engaged in recycling waste...

One week from now, the United Nations estimates, the world’s population will reach seven billion. Because censuses are infrequent and incomplete, no one knows the precise date—the US Census Bureau puts it somewhere next March—but there can be no doubt that humanity is approaching a milestone. The first billion people accumulated over a leisurely interval, from the origins of humans hundreds of thousands of years ago to the early 1800s. Adding...

India's rural innovators have proved that ordinary people are indeed capable of extraordinary inventions. Despite many constraints -- lack of education and severe cash crunch -- most of them have succeeded in using technology cost-effectively to build ingenious products. A washing-cum-exercise machine, hand operated water lifting device, portable smokeless stove, automatic food making machine, solar mosquito killer, shock proof converter, a floating toilet soap are few of the products on display...

During a recent trip to a rural part of western India to report on rising food prices, I met two kinds of farmers — those with access to irrigation and those without. The differences between the two were stark. Those with drip irrigation or sprinklers invariably were reaping rich harvests and profits. But the vast majority of India’s farmers fall in the second camp: they water their crops by flooding their...

The plastic waste (Management and Handling) Rules, 2011 notified by the Ministry of Environment and Forests, should be viewed by State governments and municipal authorities as a good blueprint for a much-needed civic clean-up. The Central Pollution Control Board estimates the consumption of plastic products in India to be of the order of eight million tonnes a year. This ranges from shopping bags to household and industrial material. The volume...