good morning and welcome to your new day i m alex mar quart. i m amara walker. ten secret service agents exchanged text messages around the date of the insurrection. where the investigation why they weren t saved goes from here. the white house is saying that president joe biden s covid symptoms have improved, but he is taking additional medication to help fight off the virus. the latest on his condition and the questions over why we haven t heard directly from the president s doctor. also, mother nature cranking up the heat. more than 85 million of us are under heat alerts today. and it s only going to get hotter tomorrow. when we ll finally start to cool down. and no one matched all of the winning numbers in last night s mega millions drawing. the astronomical jackpot now on the table in tuesday s drawing. it is saturday, july 23rd. thank you so much for waking up with us. very flnice to be back with you amara. good to be with you, alex. january 6th committe
despite more than 50% of the emissions being potentially fixable. that s shocking, though, to learn that the mitigation is such a low percentage at this point. that s frightening frankly. action is the hard part. getting people to understand and then want to change their ways, takes time. it s complicated. but i m an optimist. reporter: others aren t as optimistic. it s naive, i think, to assume that just because we can find a source of pollution means it will magically go away. reporter: rob jackson, an expert on methane thinks satellites can make a huge impact, but they aren t a silver bullet fix. we ll be able to find super emitters in way we have not been able to before, in realtime, where they are and who is responsible for them. there will be cases where that happens but others particularly internationally when i think it will require more work. reporter: ghgsat isn t alone. the european space agency has had a satellite in orbit since