and south korea, in which the countries' leaders set out a peace plan and called off their conflict. but mr trump made it clear that the us will continue to put pressure on north korea until the regime gives up its nuclear weapons. a former policeman suspected of being the so—called golden state killer, and on the run since the 70s, has made his first appearance in a california court. joseph deangelo‘s accused of multiple murders and rapes. police say they traced deangelo by using dna ancestry websites. the swedish pop stars, abba, have recorded two new songs — their first for about 35 years. the group said they were an unexpected consequence of their recent decision to put together a "virtual reality" tour. it's not yet known when the tracks will be released. coming up on bbc news, newswatch, but first it's time for click. welcome to iceland, one of the strangest places i've ever been. it is icecold. and boiling hot. now, that does come with advantages.

the volcanic activity that formed the island millions of years ago means it has access to very cheap geothermal electricity. and all that cold air? that can be used as a free cooling system. so cheap electricity and cold air. in short, the perfect place to put a load of computers. oh wow. every single one of these is a home computer. that's all it is. that is a desktop computer. and there are thousands of them. so what is it that these computers are doing that warrants all this

noise, this heat, and this power? well, they are creating or mining cryptocurrency. yep, cryptocurrency, the new family of virtual currencies that its enthusiasts say it will replace pounds, euros, and dollars, and all the traditional currencies in the coming years. that claim is, however, still a very live debate, with cryptocurrencies like bitcoin, ethereum, and ripple fluctuating wildly in their exchange rates. the more mining computers you own, the more money you make. and that incentive has led to massive hoards of machines like this one popping up all around the world. mining is cheaper if you don't have to pay for the cooling, but it's cheaper still if you don't have to pay for the computers you use at all. a factor that has led criminal is to think of new ways to try to make a quick crypto buck.

here's dan simmons. it's a crime that's fast becoming the hackers‘ favourite. and the impact often goes unseen. this house looks like your computer after it's been hijacked. everything may look fine from the outside, but inside resources have been ransacked. to add insult to injury, your electricity bill is about to go up, as you pay to power a machine that's now working hard for the criminals. a friend of mine got in touch with me on the sunday morning and said i havejust been to the information commissioner's office website, where the ico, here in the uk, our data protection body at the government, and he said my anti—virus program has thrown up this warning on the screen, he said it's a government website,

can it have a virus on it? so what we discovered was, originally the ico website was running a cryptominer. so your browser would be hijacked to mine cryptocurrencies for the hackers. after some investigation, what we found was that a third—party supplier that provides them with software had been breached and they had included the cryptominer in that. a third—party app used by the ico and thousands of other websites had been compromised. the malware told visitors‘ computers to start mining cryptocurrencies for the bad guys. you can configure a cryptominer in how much power it will use. if you are greedy it will take 100%, then the computer or phone or tablet will slow down and you will notice that when you try to do things it is not responsive, it hangs. what they have done in this case is they configured it to use up to 60% of the power of the device. so it will use a lot of it.

so the average user may never have known it was there and it was running. the ico told us no personal data was compromised. third—party applications were swiftly reviewed and their systems patched. they are also exploring new ways of protecting their systems. security firms are reporting hackers making millions of dollars. it's called cryptojacking. it's on the rise. and the gangs that do it aren't only eyeing up a lambo. tesla is one of the highest profile victims. redlock called them to say their cloud server, provided by amazon web services, had been compromised. the crims didn't want secrets, they wanted resources. and now most things are connected to the net there could be some targets you have not thought of. this viewer's smart tv is not quite clever enough to stop they cryptominer who has put its processors into top gear. just look at the heat signature

from the tv fire stick that isn't infected, to one that is. the cyber criminals can get onto any other device in your household, for example, into a microwave or even into a smart blender if it's smart enough. itjust depends on the intentions of cyber criminals and how good the device is for mining. thankfully, at the moment, our connected kitchens don't quite have the processor power the hackers are looking for. i know what you're thinking. forget the criminals, is it worth us orchestrating our own devices to start cryptomining to increase our own bank accounts or or is itjust not worth the effort? while even your mobile can mine for cryptocurrencies,

if you want to make more than a few pennies you want to buy one of these miners with processors specifically designed for thejob. so how do the maths add up? we have one of the latest cryptominers. that is not the only cost in this business. we have to pay for the electricity to run it 21w. which in a typical us city might cost us about $200 per month. so how fast can it mine cryptocurrency? well, that partly depends on how many peoplejoin in the game. the more total computing power doing this, the lower our return will be. recent estimates suggest about one bitcoin a year. so, it all boils down to how much a cryptocoin is worth. look at the bitcoin rate back in december and now in april that price has tumbled. and our costs are rising. some reports suggest you would find

it difficult to make a profit inside of a year. unless, of course, you're using someone else's kit. as the parent of a five—year—old, i can tell you that i don't want to see my daughter glued to a smartphone or obsessed with using a tablet, but at the same time, our children do need to learn how to engage with technology. so it's no surprise that a lot of devices that aim to combine coding and creativity have become popular. today i am going to be testing some of the latest. but seeing as i am a little too old for school i have some helpers. is everybody ready? yes! here at dallow primary school, these year 3 students seem to be engrossed in the experience.

over here we've got the kano pixel kit being tested. after a bit of coding takes place, there are lots of flashing lights. after connecting the app kids can get coding, creating light shows or games, even using the weather data or their own voices to trigger changes. the kids love the bright lights, but i do wonder how many times they'd need to use it before the novelty wore off. it gives you more understanding of what coding it really is. and when you're older you can become an inventor. 0r anything that has coding. it would help you. over here we have something that is actually called an inventor kit. how exciting is that? what are you up to here? we press this and then we pressed edit so we can change the picture. we can actually change the picture and how it looks. this magnetic electronic building system challenges the kids to create reactions triggered by sensors.

here, one second after moving the gyroscope, a buzzer will go off. it's encouraging our brains to get a bit better. to create things. i have no idea what they are going to invent next but i will leave them to it. over here we have a codeable drone. how are you getting on? good. it will raise up and then it will turn and go through. then it will turn red. then it will do a shape. then it will rise again. then it is going to go clockwise. it is a good job you don't have them all that. it is quite complicated. you have set up a sequence of movements. once we get some space, we will go outside the classroom to do this. here we've got the stemosaur, which is a codeable dinosaur. the kids had a great time constructing it. but it needed home wi—fi to be tested properly. leaving them somewhat disappointed.

0nce built, as a coding panel to program it, it can tell stories, dojokes, do maths, and more. all of the bits of technology do enable children to work on those programming and coding skills and problem solving as well at the same time. ok, so some space. let's give it a go. 0h! hello and welcome to newswatch, with me, samira ahmed. looking for good news — the bbc has a plan to report on possible solutions to some of the world's entrenched divisions. and did it deserve top billing on friday? arsene wenger‘s departure as manager of arsenal.

the week started with news that was always likely to prompt a frenzy of excitement among some, and get others composing their e—mails of complaint. after a morning of anticipation, monday's news at one was able to report this. now, we have some newsjust in — the duchess of cambridge has given birth to a baby boy. she's at the lindo wing of london's st mary's hospital. 0ur royal correspondent sarah campbell is outside the hospital, sarah. indeed, reeta, injust the last few seconds, the announcement that the british royal family has a new member, a prince... ernest worting was one of those left less than enchanted. but charlotte barry was more impressed. after lunch, the wait was on for the first glimpse of the new arrival, and that well—known royal lover simon mccoy was all agog on afternoon live. uh...

after lunch, the wait was on for the first glimpse of the new arrival, and that well—known royal lover simon mccoy was all agog on afternoon live. uh... there's a door, there's a policeman. where is the baby? look, can you see in the mirror in the doorway? look at the photographers and the cameramen that you can't see, hundreds who are waiting outside. audience reaction continued to come in, with michael expressing his views like this... well, the two main participants in that forthcoming royal wedding

were conducting more sombre duties on wednesday. here is nicholas witchell. first light at the australia and new zealand war memorials in london on anzac day. a commemoration attended this year by prince harry and meghan markle, in particular remembrance of the thousands of troops