-The Times of India MUMBAI: Runny noses and stomach flu aren't the only ills associated with overcast skies. The absence of sunlight hits production of Vitamin D in the body, adversely affecting blood pressure. A recent study in London by an Indian-born researcher has proved beyond doubt that the lower the vitamin level, the higher the BP. Vitamin D is synthesized when the sun's ultraviolet rays fall on the skin. But the...

-The Hindustan Times The smog that nearly choked Delhi in November was caused due to the burning of post-harvest rice stalks in Punjab, Haryana, and western Uttar Pradesh. Every year, rice is harvested using combine harvesters, which leaves a residue in the field. Earlier, harvesting was done by hand and the people who worked on the fields would take out the stalks and use them as food for animals. This practice is...

-The New York Times blog You could be pardoned for thinking that light pollution is someone’s idea of a Diwali joke. With concerns about rising air pollution hanging over India’s capital like the thick blanket of smog that appeared a few weeks ago and activists against noise pollution jostling to be heard over the burst of holiday firecrackers, the relatively benign problem of light pollution may not seem too important. But astronomers in...

-The Economic Times Along with your tablet, smartphone and car keys, get ready to pack a gas mask. And if you thought the recent smog in Delhi and the more-than-usual pollution levels (20% higher) in the last fortnight were due to the burning of residual crop in Punjab and Haryana, you are wrong. After a steady improvement since the late-1990 s, the air in Delhi — and all other Indian cities —...

-The Times of India CHANDIGARH: As Nasa satellite images over the past few days show, Punjab is literally on fire. In the images, the state is pockmarked with red dots which correspond to blazes deliberately lit by farmers to get rid of their paddy stubbles after harvest. It's an environmentally disastrous practice that the state government has shown little urgency in tackling. Among the fallout of this mass-burning is smog that spreads...