-AFP Delegations from some 140 countries agreed on Saturday to adopt a ground-breaking treaty limiting the use and emission of health-hazardous mercury, the U.N. said, though environmental activists lamented it did not go far enough. The world’s first legally binding treaty on mercury, reached after a week of thorny talks, will aim to reduce global emission levels of the toxic heavy metal, also known as quicksilver, which poses risks to human health...

Endosulfan, a powerful 50-year-old insecticide sometimes called DDT’s “cousin,” was officially banned last week at an international pesticides meeting in Geneva. Partial exemptions were created for India, however; the chemical may be used on some crops there for up to 10 years. Many countries outlawed endosulfan long ago because it is dangerous to farmworkers, accumulates in the body, kills beneficial insects and persists in the environment. The United States is an...

Young rag-pickers sifting through rubbish are a common image of India’s chronic poverty, but destitute children face new hazards picking apart old computers as part of the growing “e-waste” industry. Asif, aged seven, spends his days dismantling electronic equipment in a tiny, dimly-lit unit in east Delhi along with six other boys. “My work is to pick out these small black boxes,” he said, fingers deftly prising out integrated circuits from the...