Technology firms have been warned to consider the impact of such apps on vulnerable people.
Scientists say they have worked out how teeth become sensitive and hurt with cold food and drinks.
Concerns over Liberty Steel's future have grown after its key backer Greensill Capital went bust.
West of England seen as attractive as judges turn their backs on big cities
Malaysian tycoon says Twitter founder Jack Dorsey's first ever tweet is "a piece of human history".
The firm now aims to supply others with processors made in factories based in the US and Europe.
A plan to soak the UK flag in indigenous people's blood drew anger from Aboriginal Australians.
Researchers say criminals are taking advantage of desperate people looking for a way out of lockdown
"Governments are going to insist" on vaccines for international travellers, Qantas' boss tells the BBC.
Brighton ease their relegation concerns at the expense of fellow strugglers Newcastle as Graham Potter's side move six points clear of the Premier League's bottom...