Manufacturers are using chemical additives to make greener tyres JOHN DUNLOP had a son who complained that his bicycle was bumpy to ride. So he invented the pneumatic tyre in 1888. Various improvements have been made since then. In particular, Pirelli, an Italian tyremaker, introduced steel-belted radial tyres in 1973. These reduced the fuel consumption of cars fitted with them. Now manufacturers are trying to develop tyres that reduce that consumption...

There are now one billion hungry people on the globe, United Nations Secretary General Ban Ki-moon said recently. A statistic that is shameful and shocking at the same time. The global financial crisis too has led to a dramatic rise in hunger across the world. Ban warned that the food crisis is a wake-up call for tomorrow since by 2050 the planet's population will be 9.1 billion people, over two billion more...

SOMETIMES, TO accentuate the intransigence of the present, one must revisit the past. So first, a flashback. The year is 2006. An ordinary November evening in Delhi. A slow, halting voice breaks into your consciousness. “How shall I explain? It is not a punishment, but my bounden duty…” A haunting phrase in a haunting voice, made slow with pain yet magnetic in its moral force. “My bounden duty.” What could...

IN 1974 Henry Kissinger, then America’s secretary of state, told the first world food conference in Rome that no child would go to bed hungry within ten years. Just over 35 years later, in the week of another United Nations food summit in Rome, 1 billion people will go to bed hungry. This failure, already dreadful, may soon get worse. None of the underlying agricultural problems which produced a spike in...

Ahead of next month's climate change negotiations in Copenhagen there's a lot of anger in India about the West's pressure on it to sign up to emissions cuts. The BBC's Sanjoy Majumder travelled to India's most industrialised state, Gujarat, to see at first hand some very effective - if homegrown - attempts at tapping renewable energy. In the middle of an open field, a man crouches over some cow dung and...