Sales of crime fiction are up by almost 20% in two years, thanks in part to psychological thrillers.
The chief executive also tells Congress that Facebook may take action against Cambridge University.
The company has designed a system that can analyse conversations to target advertising at customers.
The American singer says she was first diagnosed in 2001 after having a mental breakdown.
Labels say a 10.6% rise in UK music revenue over the last 12 months will help new talent thrive.
The singer has died aged 36, after developing malignant skin cancer.
The firm has reset all customer accounts after discovering about 1,000 had been illegally accessed.
The firm has reset all customer accounts after discovering about 1,000 had been illegally accessed.
The Fall of Gondolin, which was begun more than 100 years ago, will finally be published in August.
It's like 'falling down the rabbit hole of endless what ifs' says one sufferer in a candid online debate