A fire at an electrical substation in London has led to a full-day closure of Heathrow airport, affecting at least 1,350 flights. Passengers are advised not to travel to the airport. The fire, caused by a transformer, has also disrupted power for over 16,300 homes. The London Fire Brigade responded with 10 fire engines and around 70 firefighters. The cause of the fire is still unknown, and National Grid UK is working to restore power. Teljes cikk (Euronews.com)