Toxic chemicals are accumulating in the ecosystems of the Himalayas and the Tibetan plateau, researchers warn in the the first comprehensive study to assess levels of certain organic pollutants in that part of the world.

Keoladeo National Park (KNP) is an important wintering ground for thousands of birds that undertake a perilous journey over the Himalaya to make a seasonal home in a wetland ecosystem. However, this wetland is now getting polluted by various types of contaminants such as pesticides because of the agricultural practices in the catchment area from where the park receives water. Keeping this in mind, the present study has been undertaken to assess the organochlorine pesticide (OCP) residues in the sediments inside and around KNP. Samples were collected from the different blocks of the park.

Modern agriculture practices have been great promise for economic development of nation. Farm productivity is directly proportional to use of agrochemicals as observed from the first green revolution. Improper and unsafe use of these agrochemicals, especially pesticides is not only harmful to environment but also human health. Pesticides cause 14 per cent of all known occupational injuries in agriculture and 10 per cent of all fatal injuries.

Weight loss is no more a simple calculation of calories consumed and burnt. Studies show exposure to certain toxins in the environment can make it difficult for one to shed extra pounds. What are these toxins? How do they affect body?

Carson no ‘beacon of reason’ on DDT. (Correspondence)

Malaria is an ancient disease in India. Known as the ‘king of diseases’, malaria was estimated to cause 75 million cases and 0.8 million deaths annually. In epidemic years, morbidity and mortality used to increase 2–3 times. Ravages of malaria were so rampant and devastating, that the economic growth of the country remained paralysed.

Limited human data suggest an association of organochlorine pesticides (OCPs) with adverse effects on children’s growth. The authors evaluated the associations of OCPs with longitudinally assessed growth among peripubertal boys from a Russian cohort with high environmental OCP levels.

Exposure to high concentrations of persistent organochlorines may cause fetal toxicity, but the evidence at low exposure levels is limited. Large studies with substantial exposure contrasts and appropriate exposure assessment are warranted.