This week, our Observers bring us to a hospital in Libya in desperate need of humanitarian aid, then to the streets of Yemen, where fully veiled women have joined the protests, and finally to Russia, which may have found its own new superhero.

Presentation: Derek Thomson. Editorial team: Julien Pain, Lorena Galliot, Ségolène Malterre, Sarra Grira, Peggy Bruguière.

STORY 1: LIBYA

We begin today in Libya in the city of Misrata in the West. Troops loyal to Muammer Gaddafi have been shelling the rebels there and civilians have been caught in the middle. Our Observer has been treating them - round-the-clock.

Observer: Rashid in Misrata.

STORY 2: YEMEN

Then, we to Yemen, where protests have continued against President Ali Abdullah Saleh. So has the repression - and there's been one unintended consequence. It's forced the country's women to take to the streets.

Observer: Mariam al-Attaf, in the Red Sea port of Al-Hodeidah.

STORY 3: RUSSIA

Our last stop today is in Russia, in Chelyabinsk, just east of the Urals. The city has a new superhero. He's got a cape and a mask, and he calls himself Mstitel, the Avenger. Our observer is a fan.

Observer: Elena Kozhevina in Chelyabinsk.