reporter: while the united nations has endorsed this mission to map the ocean s floor and any one can get involved visiting the sea bed map site. researchers learn to hope why it s able to thrive despite the climate crisis and what they learn may save the rest of the world s reefs, which protects coastline, storms and erosion. rene marsh, cnning walk. the weekend marks the first anniversary of staying in the newsroom from me. thank you so much for joining me the past 52 weekend for watching this show. i hope that you will be with me for many more. it s been such an honor spending weekend evenings with you. i m pamela brown. i will see you again tomorrow night starting at 6:00 eastern.