All the reaction this morning, senator cory booker joins us live. Under siege. California battling hundreds of wildfires, supercharged by nearly 11,000 lightning strikes in just 72 hours. Multiple fires now burning into each other. The firestorm on the move at this hour. Thousands fleeing. Some barely making it out. Raising the alarm. The startling new evidence, how children could carry high levels of coronavirus. Some significantly higher than hospitalized adults. This as teachers in hardhit florida are suing to stop inperson learning and the Largest School district in the nation, new york city, demanding schools to require testing. Putin critic poisoned . The most proud Opposition Leader to Vladimir Putin rushed to intensive care after falling sick on a plane in moscow. His plane made an Emergency Landing just hours after he had hot tea at the airport. Was poison mixed in his tea . Courtside confrontation. New body camera video shows the sheriffs deputy aggressively pushing raptors Team President masai ujiri as he tries to celebrate his teams nba title. The new lawsuit this morning. Dramatic rescue from strangers to superheroes, Good Samaritans racing to save a woman pinned under an suv, lifting it up as a team. And schooling the internet. Whats popping you got options but you better pass my class no flopping the incredible teachers firing up their students for Virtual Learning. This morning theyre joining us live and weve got a huge surprise for them. Good morning, america. They made me want to learn a little bit more this morning, and we have a lot to cover this morning. The two big stories, those massive wildfires in california, now converging. So many families struggling to get out all in the middle of the pandemic. We are live in the fire zone with the latest in just a few moments. But first we do want to begin, of course, with that historic night with senator Kamala Harris and the democrats, the partys biggest names out in full force presenting a positive vision for the nation but also targeting President Trump. Barack obama blasted his successor as a danger to our democracy. A former president taking on a sitting president in a way we have not seen before. Kamala harris made history the moment she accepted that Vice President ial nomination, and mary bruce is in delaware with all the highlights. Good morning, mary. Reporter good morning, george. Well, it was a night for history here. Kamala harris breaking barriers as she accepted the partys nomination. This was a night full of celebration, but also dire warnings. Democrats casting the president as a threat to the nation, and over and over again, the speakers here hitting on the same theme. Vote. Overnight Kamala Harris making history to virtual applause. Becoming the first black woman, the first asianamerican nominated to be Vice President. Lets fight with conviction. Lets fight with hope. Lets fight with confidence in ourselves and a commitment to each other. To the america we know is possible. The america we love. Reporter and in plain terms she talked about the crises facing this country. This virus, it has no eyes and yet it knows exactly how we see each other and how we treat each other. And lets be clear, there is no vaccine for racism. Reporter and making it clear shes ready to take on President Trump. Donald trumps failure of leadership has cost lives and livelihoods. Reporter the daughter of indian and jamaican immigrants, harris outlined her vision of america where people of all backgrounds are welcome. We must elect a president who will bring something different, something better, and do the important work, a president who will bring all of us together, black, white, latino, asian, indigenous, to achieve the future we collectively want. We must elect joe biden. Reporter it was a night for trailblazing women. Hillary clinton urging americans to get out and vote, warning democrats not to take anything for granted. Dont forget, joe and kamala can win by 3 million votes and still lose. Take it from me. So we need numbers overwhelming, so trump cant sneak or steal his way to victory. Reporter but it was former president obama as he passed the torch to the partys new standardbearers who launched the sharpest attacks of the night, taking on his successor. He has shown no interest in putting in the work. No interest in finding common ground. No interest in using the awesome power of his office to help anyone but himself and his friends. No interest in treating the presidency as anything but one more reality show that he can use to get the attention he craves. Reporter speaking from philadelphia, the birthplace of american democracy, obama argued that very democracy is at stake in this election. Theyre hoping to make it as hard as possible for you to vote and to convince you that your vote does not matter. Do not let them take away your power. Do not let them take away your democracy. Reporter calling him a brother, obama made an impassioned case for his former Vice President. He made me a better president and hes got the character and the experience to make us a better country. Reporter and President Trump was again watching closely firing off live tweets throughout the night attacking the speakers with those all cap tweets that he loves so much and tonight joe biden will step before the podium and address the nation for the first time as the nominee pitching himself as the leader who can take the country past the tumultuous trump years. George. Okay, mary. Thanks. Lets look ahead to tonight with senator cory booker. Thank you for joining us this morning. You know, you watched the speeches last night from Kamala Harris and barack obama. You read the tweets from President Trump. Its almost as if theyre speaking to two completely Different Countries and president obama conceded most americans have made up their minds. Is there anyone left to be persuaded right now, and what must joe biden do to convince them . Well, i think the biggest persuasion we need is to have people come out and vote in the first place. You know this. We had a very significant nonparticipation rate in the 2016 election, and, you know, i think thats the challenge in our country. Its always been. Its what our ancestors talked about, its about apathy as one of the greatest enemies of a democracy so im hoping that last night energized people, ignited people, let people know whats at stake and most importantly, that they have the power to make a difference in this nation. And what does joe biden do tonight . I think joe biden shows us his heart. I know that one thing i found particularly impressive about him on the campaign trail is how much he really does lead with a love of folks. You cant lead the people if you dont love the people. I think a lot of americans are tired of politics, tired of the divisions, theyre tired of the kind of rancor and i think he can really rise in america and be a healer and remind our country that the lines that divide us are not as strong as the ties that bind us. I really believe were at a point in america where we need to, all of us, to try to generate revival of civic grace, and i think that he has the decency to do that. I think well see that tonight. Weve never seen a former president take on a sitting president the way barack obama took on donald trump last night an existential threat to our democracy. President trump is saying the only way hell lose is if the election is rigged. Are you convinced this will be a Fair Election and what must be done for americans to see it as fair . Well, i think that we have already seen a president do things that are unprecedented and its not barack obama giving a critique of donald trump. Its donald trump doing everything from turning armed forces on Peaceful Protesters in front of lafayette square, donald trump attacking the Postal Service the way he is and days before an election. This is a time where weve seen so many norms trashed by this president , so many institutions attacked from our freedom of speech and journalists like you all the way to our own Intelligence Officers and so there is a credible belief out there by many folks in our government and elsewhere that we are at a point where our democracy is being stress tested like it never has before but as a person who grew up with two civil rights parents, i know about obstacles that have been placed to vote before. I know about the challenges that weve faced in having Fair Elections and so there may be dirty tricks from this president. Were already seeing it right now again with the post office but i learned from my parents and grandparents that obstacles will always be put up but our determination to surmount them is whats important so i hope americans are not deterred and press on in what is the most important election of our lifetime. It will define how this country moves forward, not only in the spirit of america, but our ability to manifest kindness and love for one another, but also issues that are affecting the entire planet like climate change. This is such an important election. We cannot allow any excuses to stop us from participating. Were just about out of time. Whats the number one point you want to make tonight . I think i want to talk to that heart and spirit of our country and remind us that patriotism is love of country and you cant love your country unless you love your fellow countrymen and women. That doesnt mean we always have to agree or even like each other, but we have to understand were all in this together and love is not sentimentality, but it means that were willing to stand up for each other, sacrifice for each other, to in many ways fight in this generation to do one of our greatest calls which is to put more indivisible back into our one nation under god. Thank you for your time. Thank you. We will have full coverage of the convention beginning at 7 00 p. M. Eastern on abc news live. Ill anchor on prime Time Starting at 10 00 eastern, and sunday robin and david muir will sit down with joe biden and Kamala Harris at 8 00 p. M. Michael. Thank you, george. Now to the devastating wildfires across california scorching more than 100,000 acres forcing Mass Evacuations, and take a look at this. Smoke covering much of the state and Clayton Sandell, he is on the ground for us in Solano County with more. Good morning, clayton. Reporter good morning to you, michael. We have seen many more evacuations here overnight. Firefighters telling us that just one of the four groups of wildfires tripled in size in just one day destroying more than 100 homes, threatening 25,000 others. This morning, mountainsides now massive embers burning in california as wildfires ravage the golden state forcing thousands to evacuate in the dead of night. Time to go. Reporter families struggling to get out through thick plumes of smoke creating the worst air quality in the world blanketing the bay area. Thousands waking up to devastating scenes like this. 2,000 homes at napa at risk as a fire scorches more than 46,000 acres. You can see flames coming off of of it creating these fire whirls behind me here. Many residents barely making it out. It was like the entire wall of the forest was just coming at us down the road. Reporter in Sonoma County the heat blew the windows out of the big house, but our house is still standing. Reporter some residents refusing to evacuate. Just trying to save the house. My fatherinlaws house is down there. Im headed there next. Reporter evacuees waited for answers in the parking lot of a church just outside of a roadblock, hoping theyll have homes to come back to. Who would have thought 2020 would be like this . Its just insane. Reporter in santa cruz more than 20,000 people evacuated. Code 3 ambulance for burn injuries. Two victims en route. Reporter wednesday a firefighting helicopter crashing near fresno killing the pilot and sparking a new fire. Officials say that dozens of raging fires are burning into each other creating what they call complexes. There are now four of these complexes burning across the state supercharged by the weather with more than 10,000 lightning strikes causing multiple fires. Over the past 72 hours california has experienced historic lightning. Reporter and we keep hearing words like historic being used here. Those nearly 11,000 lightning strikes, firefighters say they led to more than 360 new fires. Cecilia . We are thinking of those firefighters and those families. Clayton, thank you so much. We turn to that breaking news. Just hours ago, a prominent rival to russian president Vladimir Putin was rushed to the hospital after falling sick on a flight to moscow suspected of being poisoned. Ian pannell joins us now with the latest on this, and we are talking about one of the most vocal antikremlin critics. Reporter yeah, thats right, good morning, cecilia. Alexi navalny is russias most outspoken opponent, and he is the biggest thorn in the side of Vladimir Putin. So as you would expect, this is sending shock waves across the country. What we understand is that the 44yearold was returning to moscow when he fell ill on the plane forcing it to make an Emergency Landing in siberia where he was then rushed to the hospital. You can see that in this social video. His spokeswoman thinks he was poisoned in a cup of tea he took at the airport. She says he didnt have anything else, although doctors havent yet quite confirmed this. Navalny is now in a coma and doctors say hes fighting for his life. He has been hospitalized before again with suspected poisoning. Hes been beaten up, arrested, attacked multiple times and we know a number of putin opponents have been poisoned in the past. The kremlin has always denied involvement but there are so many Unanswered Questions about what happened to him this morning, but its looking serious. Michael. A lot of Unanswered Questions indeed. Ian, thank you so much for that. Now were going to turn to the latest on the coronavirus emergency. The number of confirmed cases in the u. S. Topping 5. 5 million as a new Study Released overnight finds some asymptomatic children have higher levels of the virus than adults hospitalized. Whit johnson has the latest as schools struggle to reopen. Reporter this morning, new evidence that kids, even those without symptoms, could be helping to spread the pandemic. The journal of pediatrics publishing a study overnight, looking at nearly 200 children hospitalized or went to urgent care finding that they carried a viral load significantly higher than hospitalized adults. Researchers also implying that schools may have to focus on testing strategies instead of temperature checks because kids could have high levels of the virus while also being asymptomatic. There have been some studies to show that children from 10 to 19 can transmit to adults as easily as adults transmit to adults. Reporter in new york city, the Largest School district in the country, the Teachers Union sounding the alarm threatening legal action, demanding that schools have ppe, proper ventilation and require testing for students and teachers. This city went through hell and came back and we are not going back to hell because of shortsighted political agendas. Reporter in florida, the states largest Teachers Union suing to stop inperson learning as the state just recorded more than 10,000 deaths. Ive chosen my students over so many difficult things, but i cant put my family at risk. I will probably get this. Reporter one teacher in utah moving into his basement with his son for months, even installing a toilet as a distancing precaution for his highrisk daughter. How hard can it be . Youre just living like in a dorm room in your basement to have your family right there and yet untouchable. Reporter and new this morning, the policy lab at Childrens Hospital of philadelphia launching an online tool so you can see if your county meets their criteria for schools opening safely. Its important to see that your area is stable or getting better, but only a couple dozen of the 750 counties that we track each week would meet those criteria today. Reporter there is also news this morning about blood plasma from patients who recovered from the virus as a potential treatment for covid19. The fda is now putting emergency authorization on hold. Some Infectious Disease experts including dr. Anthony fauci have argued more data needs to be reviewed showing its effectiveness before a decision can be made. George. Okay, whit, thanks very much. Lots more coming up this morning, including the new body camera footage released from the courtside confrontation of last years nba finals. And the moment of truth for Lori Loughlin and her sentencing for her part in that College Admissions scandal. Prosecutors pushing for time behind bars. First, lets head over to ginger. Ive got my eyes, cecilia, on three tropical waves in the atlantic, one of them has become tropical depression 13. Should become Tropical Storm laura late today or early tomorrow, and the track takes it over the caribbean. Some of those islands already have Tropical Storm watches. The more interaction it has with those, the less impact it might have on florida. Well know that going through the weekend by early next week. Also one more were watching for gulf coast impacts by next week, texas to louisiana. Lets get the rainy cities now, consumer cellular. Stay right there. Well be r