combat the effects of climate change, they re trying to build a sea wall here. that s partially funded by the european union, especially by france. a lot of experts believe it could be too little too late in order to try to save the city and in the long run they might have to abandon the city altogether because it simply isn t enough. really a dire projection here. one of the things i ve heard from experts for a very long time is two things need to happen. on the one hand, of course, global warming needs to occur, but on the other hand also there needs to be a lot of money put into irnfrastructure and they ae causing such havoc in places right here. isa? such important context from fred pleitgen in senegal. thanks very much, fred. we appreciate it. nic robertson, thank you to you. while president biden is overseas, he s also seeing