World news briefing: City’s toxic air, new species found and dam disaster

- Here are five stories from around the world that you need to know today.
- Indian city’s toxic air could cause ‘permanent damage’ to people’s health.
- Ukraine says Russia is preparing for war in Europe as soon as 2029.
- High Court rules firm liable for Brazil dam disaster that killed 19.
- Seven new frog-like insect species unearthed in Ugandan rainforest.
- The world's first permanent outdoor Pokémon theme park is opening.

