Sign up for our daily briefing
Make your busy days simpler with Axios AM/PM. Catch up on what's new and why it matters in just 5 minutes.
Catch up on coronavirus stories and special reports, curated by Mike Allen everyday
Catch up on coronavirus stories and special reports, curated by Mike Allen everyday
Denver news in your inbox
Catch up on the most important stories affecting your hometown with Axios Denver
Des Moines news in your inbox
Catch up on the most important stories affecting your hometown with Axios Des Moines
Minneapolis-St. Paul news in your inbox
Catch up on the most important stories affecting your hometown with Axios Twin Cities
Tampa Bay news in your inbox
Catch up on the most important stories affecting your hometown with Axios Tampa Bay
Charlotte news in your inbox
Catch up on the most important stories affecting your hometown with Axios Charlotte
London Heathrow Airport. Photo: Niklas Halle'n, WPA Pool/Getty Images
London's Heathrow Airport announced that it had suspended departures Tuesday as authorities investigated a reported drone sighting.
Why it matters: Heathrow is the busiest airport in Europe and the second-busiest airport in the world by international passenger traffic. Drone disruptions shut down London's Gatwick Airport during holiday travel last month, though authorities never determined who was responsible.
Go deeper: Gatwick drone debacle foreshadows nightmare security threat