Scientists battle to save world's coral reefs
![Scientists battle to save world's coral reefs](http://bloximages.chicago2.vip.townnews.com/lacrossetribune.com/content/tncms/assets/v3/editorial/d/62/d626ebc7-c105-5051-987a-ca44c26c384f/5766ec3f719d4.image.jpg?resize=300%2C225)
HONOLULU (AP) — After the most powerful El Nino on record heated the world's oceans to never-before-seen levels, huge swaths of once vibrant coral reefs that were teeming with life are now stark white ghost towns disintegrating into the sea.