it's hugely important to make those case solvable. >> rachel crane, rachel crane.w let's check with anderson coop were a look ahead on what is on ac 360. >> keeping them honest, new facts on the what happened to sergeant bowe bergdahl in the nearly five years he was held by the taliban. we're going bring use those details, facts tonight. here is what you won't see in the program, speculation speculation or rush to judgment. you'll also hear from someone who knows what it's like to be alone on the run in afghanistan. former navy s.e.a.l. marcus latrell. he was part of a mission in afghanistan. his book "lone survivor." you'll hear his perspective on sergeant bergdahl. those stories and our tributes to heroes on the 70th anniversary of the d-day invasion. that's all at the top of the hour, don. >> we'll be watching. thank you, anderson. >>> republicans' >>> the republicans so-called war on women is heating up tonight. it has to do with this picture, three state gop lawmakers pretending to read women's magazines. it was reported as saying, don't say we don't understan

here's our rachel crane. >> reporter: with california experiencing one of the worst droughts in the state'scess to fresh water has never been more important or more difficult. here in southern california, the largest desal nation plant in the western hemisphere is being constructed. it will soon take water from the ocean and create 50 million gallons of fresh water a day. >> california is in a serious drought right now. and any new water supplies are important to the region. >> we have $190 billion economy in this region that's dependent on water. the question you need to consider is, what's the cost of not having enough water? >> unlike, let's say, a water that comes from rainfall or water that comes from snow pack, we're utilizing what essentially is the world's largest reservoir, the pacific ocean. >> reporter: the carlsbad desal nation plant will cost approximately $1 billion. the fresh water will be pumped ten miles underground to a regional delivery system. providing water to an additional 300,000 san diego county residents. customers, they won't know whether they're trig desal nature

cnn's rachel crane takes us inside this technology and explains why some feel its violating your rights>> reporter: since the earl 1990s, crime rates have steadily declined across the country. one possible explanation -- smarter data-driven policing. here in los angeles, the lapd is embracing new technologies and big data analytics like never before, changing the way we fight crime. watch commander sergeant kennedy who shows how big data analysis is ing cha changing the force. >> our license plate reader. three cameras attached to the light bar. >> reporter: license plate readers installed on pa control cars, common place and automatically scan every license plate they drive by. >> goes through the sacramento database to check for california vehicle systems to see if it's stolen or if there's a want on it for some reason. be on alert. $30,000 warrant on the parked car we just passed that's behind us. >> reporter: over the course of the day, the lapd can scan tons of thousands of license plates across the city. at the realtime response division, they're fed into a game-changing data mini

cnn's rachel crane takes us there. >> reporter: this is the london array.world's largest offshore wind farm. and this is what it helps power. the farm has 175 giant wind turbines. capable of generating enough electricity to power 500,000 homes. and it's quite possibly the answer to london's growing energy. >> so we expect about 900,000 tons to be saved per year to be saved. that's equivalent of 300,000 taken off the road. >> reporter: approximately 8.3 million people live here. and by 2021, that number is expected to climb to 10 million. a growing population means a growing need for energy. london, one of the most historic cities in the world, knows that in order to keep up with future energy demands, they need to update and diversify their energy portfolio. >> it's really about how to get a more cleaner future, reliable energy source. and that's really what it's about. moving from that old gas nuclear, to more the new offshore winds. >> reporter: the uk is one of the world's leaders in offshore wind power. there are over 1,000 turbines dotting the waters.

cnn's rachel crane takes us to san diego, where engineers are in the middle of building a high-tech answera growing problem. >> reporter: with california experiencing one of the worst droughts in the state's history, access to fresh water has never been more important, or more difficult. here in southern california, the largest plant in the western hemisphere is being constructed. it will soon take water from the ocean and create 50 million gal, of fresh water a day. >> california is in a serious drought right now, and any new water supplies are important to the region. >> we we a $190 billion economy in thick region dependant on water. the question you need to consider, what's the cost of not having enough water? >> unlike, let's say, water that comes from rainfall or water that comes from snow pack, we're utilizing what essentially is the world's largest reservoir, the pacific ocean. >> reporter: the carlsbad desalination plant will cost approximately $1 billion. the freshwater pumped ten miles underground to a regional delivery system providing water to an additional 300,000 san diego c

. >> that's a movie but rachel crane explains how l.a.hnology to try to prevent crimes before they even happen. >> reporter: since early 1990s, crime rates have declined across the country. one possible explanation, smarter data driven police. here the lapd is embracing new technologies and big data analytics like never before, changing the way we fight crime. watch commander sergeant kennedy showed how big data analysis is changing the force. >> this is our license plate reader. we have three cameras attached to the light bar. >> license plate readers installed on cars have become commonplace. automatically scan every license plate they drive by. >> goes through the database to check for california vehicle system to see if it's stolen, a want on it for some reason. got an alert. $30,000 warrant, on a parked car we passed that's right behind us. >> reporter: the lapd can scan tens of thousand license plates across the city. at real-time analysis and critical response division, fed into a system called palantir. it can claim the cia as an

here's cnn's rachel crane. >> reporter: with california experiencing one of the worst droughts in state'ster has never been more important or more difficult. here in southern california, the largest desalination plant in the western hemisphere is being constructed. it will soon take water from the ocean and create 50 million gallons of fresh water a day. >> california is in a serious drought right now, and any new water supplies are important to the region. >> we have $190 billion economy in this region that's dependent on water. the question you need to consider is what's the cost of not having enough water. >> unlike, let's say, water that comes from rainfall or water that comes from snowpack, we're utilizing what essentially is the world's largest reservoir, the pacific ocean. >> the carlsbad desalination plant will cost approximately $1 billion. the fresh water will be pumped ten miles underground to a regional delivery system providing water the an additional 300,000 san diego county residents about customers won't know whether they're drinking desalinated water or not? >> that's rig

rachel crane has the story. >> reporter: with california experiencing one of the worst droughts in thecess to fresh water has never been more important or more difficult. here in southern california, the largest plant in the western hemisphere is being constructed. it'll take water from the ocean and create 50 million gallons of fresh water a day. >> california's in a serious drought right now. and any new water supplies are important to the region. >> we have $190 billion economy in this region that's dependent on water. and the question you need to consider is what's the cost of not having enough water? >> unlike, let's say, a water that comes from rainfall or water that comes from snow pack, we're utilizing what essentially is the world's largest reservoir, the pacific ocean. >> the carlsbad plant will cost approximately $1 billion. the fresh water will be pumped 10 miles under ground to a regional delivery system, providing water to an additional 300,000 san diego county residents. >> customers, they won't know whether they're drinking des desalnated water or not. >> that's right.