CNN CNN Newsroom Live August 31, 2019 07:55:00
And global actions to tackle climate change in the strongest and fastest way possible, we can turn that around. >> reporter: spanning more than 2,300 kilometers the great barrier reef is teaming with life, including 400 types of coral and 1,500 species of fish and 4,000 types of mollusks. some scientists say a small measure of help may be on the way for this largely manmade problem from nature itself. a chunk of floating lava rock the size of manhattan is drifting down the australian coast over the next few months. experts say it could be like a special delivery of sea life for the reef as the...