Jo Tuckman reports from Mexico City on the outbreak of human swine flu that's killed more than 80 people, all in Mexico.
There are fears that the swine flu virus will become a worldwide pandemic. Chris McGreal in Washington looks at the US response to the crisis.
Ministry of Defence documents revealed in a Freedom of Information request by Channel 4 News details a series of serious safety breaches at Faslane nuclear submarine base. Rob Edwards explains their significance.
David Cameron told the Conservatives to prepare for an "age of austerity" at his party's spring conference yesterday. Chief political correspondent Nicholas Watt examines what that might mean in practice.
Climate change is making southern Britain windier. That's good news for wind farms, reports Tim Webb.
