drugs. tough, new auto emission standards about to be announced, but will they push more americans to go electric a big upside of artificial intelligence, detecting cancer much earlier, and predicting when it might strike and the young, bold athletes sharing their culture and superstar tony hawk. announcer: this is nbc nightly news with lester holt welcome. once again, in the tragic aftermath of a mass shooting, we re getting a person look at pol risking their own lives to stop an active shooter late this afternoon, louisville police releasing body cam video of officers rushing to a downtown bank yesterday, immediately coming under fire from a bank employee he was armed with an ar-15 assault-style rifle, carrying out a murderous rampage, fatally shooting five people the gunman killed by police tonight one of those officers, who rushed to stop the gunman, a rookie, just days on the streets, remains in critical condition, and tonight there is a deeper understanding
and then getting back up to reengage. officers being hailed as heroes for stopping him from killing more people. were there warning signs? and what his neighbors are saying. damage control. new revelations from the leaked classified intelligence documents, putting u.s. alliances in question. the manhattan district attorney sues a top house republican, claiming interference in the investigation of donald trump. the battle over an abortion pill. big pharma pushing back against a ruling, as some states start stockpiling drugs. tough new auto emission standards about to be announced, but will they push more americans to go electric? a big upside of artificial intelligence, detecting cancer much earlier, and predicting when it might strike. and the young bold athletes sharing their culture and moves with skateboarding superstar tony hawk. announcer: this is nbc nightly news with lester holt. good evening and welcome. once again, in the tragic aftermath of a tragic sh
reporter: we ve seen the green revolution firsthand, from the assembly line 3,000 pounds of lithium-ion cells helping the hummer to accelerate from zero to 60 in three seconds to the front line. eventually, they want to take their whole fleet electric. just two years ago automakers agreed that evs would make up half their sales by 2030. now the industry says the new white house goals aren t realistic. writing in a statement, this requires a massive 100-year change to the u.s. industrial base and the way americans drive. and there are a lot of things that h have to happen to get us to a full ev culture. reporter: including raw materials, charging stations, and the electric grid to power it. for now, sticker shock may convince many americans to stick with their gas guzzlers. tom costello, nbc news, washington. up next, we ll take a look at how artificial intetelligence i is alreready making a differerence in dedetecting cacancer. hahave a date,e,
reporter: no you can t. it benefits those who have a garage at home, they can plug it in overnight, and it depends on how many people buy electric cars, how fast and where you live. what you will be seeing a lot more of around the country are these, car charging stations. a miami-based car charging group working closely with cloon check tphol gees inch storing chargers in condo buildings, parking lots. take a look, the first 20,000 of these are really in the development stage. this is a coverage map and this is another company s coverage map, both of these companies got millions of dollars to build these. there is clearly a lot of empty space. as of today it has been one of the biggest growth injuries possible in the near future. you re changing the entire transportation system. reporter: and this ev culture has its own anxiety phrase called range anxiety.