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The young Egyptians who can't wait for change: Lyse Doucet meets protesters on the streets of Cairo and finds out why they think their time has come.

Normal life has resumed in some parts of Afghanistan as US-led troops push the Taliban back. Robert Fox visits one town that's thriving and asks: is this a turning point or just another winter lull in the fighting?

Homosexuality can be punished with a jail sentence in Uganda, and some people think it should even carry the death penalty. But following the murder of gay rights activist David Kato, Anna Cavell finds Kampala's gay community in defiant mood.

The explosion at the Chernobyl nuclear power station spread deadly pollution far and wide. Twenty five years later, the nearby town of Pripyat is still uninhabitable, a ghost town isolated inside a 30 kilometre "zone of alienation". Richard Hollingham explores the ruins of what was once a model Soviet town.

The British established tea plantations in India, but it was Indian tea-sellers that developed chai: a spiced tea with its own unique method of preparation. Judy Swallow explains how she acquired a taste for a beverage she once thought "vile".