Heathrow Airport Shuts Down After Fire Sparks Major Power Outage

London's Heathrow Airport, one of the world's busiest travel hubs, has been forced to close for an entire day following a fire at a nearby electrical substation. The blaze caused a major power outage, leading to the cancellation of all flights until at least midnight on Friday. Officials warn that disruptions could continue in the coming days as power is restored. Heathrow typically handles around 1,300 flights daily, meaning thousands of passengers are affected. Authorities are working to assess the full impact and restore normal operations as soon as possible.