Scientists Invent Underwater Umbrellas to Protect Coral Reefs—and It Appears to Be WorkingT2Covered by 1 source · first reported by Gizmodo at 02 Oct, 04:00 UTCThe world's coral reefs are in crisis, but a crafty solution could help.SourcesT2Scientists Invent Underwater Umbrellas to Protect Coral Reefs—and It Appears to Be WorkingGizmodo02 Oct, 04:00