the occupied crimean peninsula. mr putin also ordered a full investigation into the incident. ukrainian officials have welcomed the explosion. there have been reports of at least three more deaths on another day of mass protests against iranian authorities. female students shouted go back when the president visited a women s university. five teenagers in hong kong have been found guilty of advocating a violent revolution against the chinese state. they were sentenced up to three years in detention. now on bbc news, click takes to the catwalk. the team look at how ai is helping fashion retailers give customers a more personalised shopping experience. this week, the race to preserve ukraine s heritage and culture by sd scanning its buildings. phone too big? display too small? spencer has been looking at the latest flexi screens that are coming around the bend. you couldn t do this with a solid glass tablet. we will try on some smart fabrics and a solar powered shirt. and sticki
most high speed trains are powered by electricity. at the bo ness and kinneil railway, engineers have also moved on from the past and into technologies of the future, where they are working towards cleaner rail travel. this is a little train that could be powered by hydrogen. the train itself is not new. instead, this is where old technology meets new and a test of where hydrogen power might be a viable option on our railways. the technology beneath my feet is relatively new for the railway but one of the interesting things about this project is that this train is actually quite old, built in 1979. it has been retrofitted to run on hydrogen. so, what was a class 314 headed for the scrapheap is now a class 614 hydrogen powered train. the hydrogen is stored in tanks underneath the carriages along with the hydrogen fuel cell which converts the hydrogen back to electricity which powers the train. all that is emitted is steam and water. the hydrogen needed to power the train is ma
generations about that. now, eugene s company is helping to get high powered scanners and training to the right people so they can create these incredibly detailed 3 d scans. they hope it can be used at a later date to create exact replicas or in different ways in museums to display the history that has been lost in its physical sense. some of the technology they re using is already in use here at the british museum in london. they use it to scan objects, allowing detailed replicas to be made or to help the experts to study them further. one of the scanners is the artec leo. it may be small but it is a powerful device, and has a big price tag it costs more than 26,000 euros but has been donated to the project for free. the device has a few sensors and it has a projector. projector projects a pattern onto the object and this pattern is being deformed by the geometry of the object and then, using this distortion, you can reconstruct the 3 d. and then, the algorithm in real
at different ways of preserving buildings digitally and now, that technology is being used for a very urgent task. as alistair keane has been finding out. across ukraine, hundreds of buildings have stood for years as important cultural sites. but through the war, many have gone from this, to this. their architectural wonders becoming piles of rubble. every day, they destroy something really important in terms of cultural heritage. for example, so, yesterday in my native kharkiv, there were shellings and today as well. there were shellings of the central area of the city and, as far as i know, some historical monuments and buildings have been damaged. and of course, it is also very important to preserve the heritage and also to tell the next generations about that. now, eugene s company is helping to get high powered scanners and training to the right people so they can create these incredibly detailed 3 d scans. they hope it can be used at a later date to create exact replica