The global race to produce hydrogen offshore
There is much excitement about the prospect of making hydrogen on offshore windfarms. Could it work?
'Putin's palace': Builders' story of luxury, mould and fake walls
The Black Sea mansion highlighted by Alexei Navalny is beset with construction issues, say builders.
Covid-19: Chinatowns fighting racism and pandemic to survive
People have been avoiding Chinatowns since the start of the pandemic - and now they're struggling.
Covid and gun violence: Tijuana, the city with a double pandemic
Aida and Daniel are married - and both paramedics in Tijuana, one of the most violent cities in the world.
Arab Spring: How the uprisings still echo, 10 years on
Revolutions brought dramatic to change to the region - but the causes have not gone away.
Coronavirus vaccines: How’s my country and the rest of the world doing?
When it comes to vaccine distribution there is one question most people are asking - when will I be offered it?
Forests the size of tennis courts
Micro-forests are being planted in towns and cities around the world.
Impeachment: 'Convict Trump or it could happen again,' trial told
Democrats wrap up their impeachment case against former President Donald Trump.
Driver captures footage of deadly mass pile-up on a Texas highway
The early morning pile-up killed at least five people and left others trapped in their vehicles.
US football team celebrates Super Bowl win with boat parade
The Tampa Bay Buccaneers beat the Kansas City Chiefs on Sunday in the biggest game in US sport.