Colours in the sky on Diwali night are metals - chemistry of firecrackers, and their effects

India, Nov. 7 -- The colours of firecrackers in Delhi on Diwali depend on metal salts that burn into fine particles, whether these are the 'green ones' or the conventional ones sold illegally. One of... Read More

Population, 20m from trees, open on 3 of 4 sides: The rules for placing air quality monitors that give a city's AQI

India, Nov. 6 -- Every winter, as toxic smog cloaks Delhi-NCR, a set of emergency measures comes into force. The scale of the restrictions tightens at each stage under the Graded Response Action Plan ... Read More

How climate crisis is hurting India more than the world, from deaths to diseases

India, Oct. 28 -- Climate change should be formally recognised and addressed as a global health emergency, say the researchers behind the Lancet Countdown on Health and Climate Change, who found in th... Read More

The engineering that lets flex-fuel cars run on E85 and E100, and why ordinary petrol cars cannot

India, Oct. 27 -- The government on Monday amended vehicle emission rules so that cars can be certified to run on E100 as well as E85, high-ethanol fuels that ordinary petrol cars cannot use and that ... Read More

The whale in Whalefall could technically swallow a person. There's no record one ever has

India, Oct. 17 -- In Whalefall, a survival thriller released in cinemas this month, a diver is swallowed whole by a sperm whale, the one whale with a throat wide enough to take a person, though no wha... Read More

Hijack scare on Air India flight: Code 7500 and the protocols it sets in motion

India, Oct. 14 -- Air India flight AI 2030, a Boeing 787-9 flying from Frankfurt to Delhi, was diverted to Jaipur on Wednesday morning after its pilot issued a hijacking alert, according to sources in... Read More

From London's Hyde Park to Delhi's Jantar Mantar, the idea and history of 'designated' protest sites

India, Oct. 13 -- In the summer of 1866, the Reform League, a movement campaigning to extend the vote to working men, called a meeting in Hyde Park, central London. That meeting, scheduled for July 23... Read More

Margaret Hamilton, who led Apollo's software team, and the women whose work shaped modern computing

India, Oct. 11 -- Hamilton, who died on September 30 aged 90, led the team that wrote Apollo's onboard flight software. She was one of many women whose computing work was recognised late. One day in ... Read More

CJP protest: The law that allows Delhi Police to set up barricades, checkpoints and restrict traffic

India, Oct. 10 -- Delhi Police closed off the approaches to Jantar Mantar with barricades on Saturday, ahead of a protest called by the Cockroach Janta Party against Chief Election Commissioner Gyanes... Read More

Ambedkar wanted no voter left out due to 'prejudice' or 'whim': The making of independent India's first electoral roll

India, Oct. 6 -- The task to compile independent India's first voter list was done by hand. Clerks, 16,500 of them, were hired on six-month contracts to type the rolls and collate them by constituenc... Read More

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