Satellites watch as 4th global coral bleaching event unfolds (image) 

 Satellites are tracking in real time as multiple major coral reefs around the world get paler due to warming sea temperatures in the fourth-ever global bleaching event. 

https://cdn.mos.cms.futurecdn.net/3RgSYFsgJab4ot692aURuc.jpg

https://www.space.com/fourth-global-coral-bleaching-event-satellite-imagery