Explore the World Trade Center site
This picture by Mark Lennihan/AP was taken in March 2011.
What's it like to live in one of the world's poorest towns?
In the hot weather, train passengers are being warned of further train delays caused by buckling rails.
Buying a property with a tenant and paying them to live there may sound odd, but the practice has been around in France since the 9th Century - and it's getting more popular. Why?
A newspaper firm has protested about damages in phone hacking cases. But how is compensation worked out?