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 made on site. electricity from renewable sources is used to split water, creating hydrogen. that is then compressed, compressed again, and then stored ready for refuelling the train. but if most of the uk rail network is electrified, what part will hydrogen play? some commentators say that hydrogen is actually a distraction and what we should be focusing on is fully electrifying our railway lines. if you have a route where you cannot do overhead electrification and the route is too long or there is not time to charge, then the hydrogen train fills that gap. you can get a range approaching diesel, you can refuel quickly and you can transport hydrogen multiple ways. so the hydrogen train fulfils some operational requirements you cannot m
to texas for his first visit since taking office to the us southern border with mexico. he ll discuss the situation on the border which has seen record numbers of migrants and asylum seekers. you are watching bbc news. it s the travel show. no turning back now. ijust need to get there. even if it isjust the debris field, i will be very happy, paying my respects in the debris field. radio: talk about comms. .. co . so, it was just weird, almost like he. radio: diver s comms, titan i was surprised when they made a turn as they departed the platform, i let them know he snagged a buoy. yeah, roger that, comms. this is diver one. just a heads up, it looked like he was heavy and possibly dropped a thruster because he started spinning really weird when he came off. he bounced a bunch of times when he was trying to leave the platform. radio: copy. which direction did he spin? er, starboard. so it would have been his starboard thruster? yeah. checked it and said it was good. we will f
america becomes the first country in the world to approve covid vaccines for babies. hello and welcome to bbc news. polling stations have opened across france in the final round of voting for parliamentary elections. at stake is control of the 577 seat national assembly, where the liberal party founded by president emmanuel macron has held sway for the last five years. but, president macron s candidates are facing strong opposition in the form of an alliance of left wing parties. i m joined now by our correspondent hugh schofield. only two months since emmanuel macron won the presidency convincingly, much of a challenge that he face this time round? it is that he face this time round? it is a big challenge. that he face this time round? it 3 a big challenge, surprising challenge, not from the far this time. but from the left. this coalition which has been created by the force of will of one man, jean luc melenchon, the man who came third in the presidential election, who ca