Delhi pollution: The bar selling oxygen to choking city
Pollution is at dangerous levels in the Indian capital and one bar is selling fresh air - at a price.
Hong Kong Polytechnic University: Images from inside as siege nears end
The campus siege has been one of the most dramatic confrontations in the wider protest movement.
Prince Andrew BBC interview: Six things we learned
The Duke of York's unprecedented Newsnight interview contained several revelations.
Was Taylor Swift really banned from playing her hits?
Taylor's label can't stop her performing her own songs. The problem comes when she puts them online.
I won the lottery at 22, here's what happened next
It's 25 years since the first ever National Lottery - we speak to someone who's won it.
Scientists create slippery toilet coating that stops poo sticking
Scientists say ultra-slippery toilet coating could save a huge amount of water across the planet.