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might's ancient sequoias as wildfires close in. >> i'm standing right in front of the grizzly giant and we've got a sprinkler system set up in front of it. >> i'm pamela brown in washington. you're live in the cnn "newsroom." we want to take you right now to mariposa, california as evacuations are under way as fires threaten the ancient sequoias. our nick watt has just arrived on the scene. nick, how serious is the season there, and what are they doing to protect these incredibly special trees? >> reporter: well, we just have heard that the fight is going in the right direction, but ...

First images to beam back from nasa's james webb telescope. the lucky few who have already had a sneak peek say they are unlike anything they have ever seen. cnn's kristen fisher explains why this is such a huge step for space exploration. >> and liftoff. >> reporter: six months after the most powerful telescope ever made launched into space. >> controller? >> the team inside the webb space telescope's flight control room is preparing to reveal what astronomers all over the world have been waiting for for decades. the telescope's first full color images which are expected to be light years mor...