to have been arrested at opposition rallies across russia, including opposition leader alexei navalny. the founder of the swedish furniture giant ingvar kamprad, has died at the age of 91. and a team of elite mountaineers has rescued one of two climbers stranded near the top of one of pakistan's most dangerous mountains. now on bbc news it's time for sportsday. hello and welcome to sportsday, i'm katherine downes. the headlines this evening: roger writes more history — 20 grand slam titles now — how many more can he win? still on for the quadruple — manchester city ease into the fifth round of the fa cup, beating cardiff. and last year's beaten finalists chelsea, are also through. they beat newcastle 3—0 at the bridge. and some consolation for the ashes — england beat australia to win the one—day series 4—1. good evening — we start where the sporting day started — with remarkable scenes in melbourne where roger federer couldn't contain the tears as he won his 20th grand slam title, 1a years after his first australian open win. it was another gripping final in melbourne as he beat marin cilic in five sets. james burford reports. the warning signs were there for all to see, 20 grand slams — the prize for the swiss. he's already the most successful male singles player of all time. what an arena then in which to surpass another milestone. never one to waste time, a fast start is something of a trademark for the 36—year—old. the forehand looking as strong as it ever has done. just 2a minutes into the match and a first set point, you needn't give roger federer a second chance, amid the heat, somehow keeping cool. but what is a final without a fightback? cilic, a magician in his own right. after this tournament, he becomes the third highest ranked player in the world and has every shot in the book. commentator: well done, what a gutsy set. so, spellbinding though is federer‘s tennis, you can never truly cast him aside. how often over the years have we seen him hammering down an ace to regain the lead, even with the mighty thor watching in the crowd. by no means finished, cilic forced a fifth and final set, fighting spirit there for all to see. but this was to be federer‘s day. the first man to win 20 grand slams and a sixth australian open title. of course winning is just an absolute dream come true. the fairytale continues for us, for me. after the great year i had last year, it's incredible. cheering emotions running high, 20 already, how many more can this great champion win? james burford, bbc news. so another moment of history for roger federer. how many can we expect from him? bbc tennis commentator john lloyd thinks he's only getting better with age. he's really a freak of nature and i mean that in a nice way because he's moving better now than he was in his 20s and he's 36. i don't understand it and i don't think anyone does. his hunger for the game is still there. it's extraordinary to watch. i tell you, every time i watch him play i think we are so lucky to have him in our time span because he is belief. because he is beyond belief. are we going to see him win more, do you think? absolutely, this year certainly, how long he can keep motivated is anybody‘s guess but now you'd have to say he's the favourite for wimbledon, not the french, but the us 0pen you'd have to blame as the favourite as well, so why not? if the likes of djokovic andy murray don't come back to challenge him who will be there to test him? that's the thing, at the moment there is this sort of gap and lots of the players we expected to jump into that gap am quite arrived there yet. thiem, zverev, raonic, great players, but they are not as good as federer. kyle edmund has a chance to go into the top ten to join that group but who will knock him off the top john lloyd speaking withjohn watson a little earlier. most of the weekend's fa cup business took place yesterday — today there were just two ties, and no upsets. premier league leaders manchester city beat championship side cardiff city 2—0 — joe lynskey reports. the spirit of the fa cup has spread across south wales. last night newport made the headlines, now attention was on the capital but cardiff faced no ordinary giant—killing, this was manchester city and they strive for style. commentator: how clever was that, brilliantly thought out, and nobody in the cardiff city wall, in the cardiff city goal, in the cardiff city stadium, was expecting him to do that. but kevin de bruyne's quality was almost cancelled out by calamity, city's kibaar claudio bravo got lucky you. it inspired the championship side to their best speu championship side to their best spell of the game but with the premier league leaders trouble is a lwa ys premier league leaders trouble is always waiting —— city's kibaar.m is 2—0, raheem sterling headed it m, is 2—0, raheem sterling headed it in, across from silva onto the head of the smallest player on the field. sterling's stellar season goes on, moving onto 19 goals, and with players like him all over the pitch, ca rd iff's players like him all over the pitch, cardiff's frustrations were boiling over “— cardiff's frustrations were boiling over —— sterling. joe bennett's challenge was inexcusable but somehow he stayed on the pitch, and even with 11 meant his side could find no way through. the full—back was eventually sent off for a second yellow but city's damage already done. they remain the giants no one wa nts to ta ke done. they remain the giants no one wants to take on across all four competitions. joe lynskey, bbc news. we have to protect the players, they have to be two or three weeks, or maybe more, out. they have to do theirjob. you have said this before. do you feel, though, that you are not being listened to? sorry? you have said before that you don't think you'll keep players are getting enough protection, in press conferences, are you not being listened to on that front? not my players, the players. they are there to protect the players. if it is dangerous it is dangerous, that's what it is. i thought we did really well, actually. i'm pleased with one or two aspects today and we're back where we were before christmas now. the quality showed through, didn't it? there was only him who would score the free kick like that, best team in the world, so you will get bits of quality like that. we kept in. if they have had our chances they would have scored three or four goals. chelsea reached the fifth round — at the expense of newcastle. a comfortable 3—0 win for last year's beaten finalists, as adam wild reports:. as adam wild reports. it may only be round four but for chelsea the significance of the fa cup is rapidly increasing. perhaps now their best chance of a trophy. for newcastle, their biggest battles may lie elsewhere. no great surprise then that it was the blues who started with the greater urgency, michy batshuayi finding space and settling any nerves. his chances may have been limited this season, when they do for his way he has a habit of making the most of them. his second touch fortuitous, but as they say, you make your own luck. newcastle hopes fading, they did find a little to cling on to but such moments were scarce. chelsea, meanwhile, continued to push forward, marcos alonso's effort was, as it turned out, merely a warning, one that wasn't heeded. commentator: it is alonso, it's 3—0, he is so good at that. chelsea comfortably through to the next round and newcastle with plenty more on their minds. adam wild, bbc news. rangers have returned to second in the scottish premiership on goal differnece ahead of aberdeen. they beat ross county 2—1 at victoria park. daniel candeias scored rangers' first, and jason cummings added this second. the former liverpool striker david n'gog scored ross county's goal on his debut. in the women's super league manchester city are still two points clear at the top after a 3—0 win at sunderland. second—placed chelsea needed a late winner to beat everton1—0 and avoid losing ground on city. jonna andersson scored her first goal for the club inside the last ten minutes to take a much needed three points. elsewhere birmingham city beat yeovil 3—0 and reading arsenal finshed goalless. england have — to a certain extent — avenged their ashes loss to australia with a comprehensive victory in the one—day series. surrey swing bowler tom curran took five wickets as england won the final match by 12 runs — to take the series 4—1. alex gulrajani was watching. a new dawn for cricket in western australia with a sell—out crowd at perth's new arena to witness england finding the boundary rope with relative ease. after roy and bairstow fell short of a half—century root stood his ground and made 50 with a little help. 0thers couldn't come as he soon ran out of batting partners and england were reined in, although tom curran cut loose at the end. a suitable warm—up for what followed as he removed david warner early in the australian reply. in his absence marcus stoinis took on the england bowlers and had a bit of a party. butjust as england were told to put big partnerships together so too did australia, stunning caught and bowled from moeen ali removed mitchell marsh. tim paine was the last line of attack for the hosts and he made for a nervy ending until tom curran struck again. a new ground but a somewhat familiar feeling in this series. an england victory. rory mcilroy finished second at the dubai desert classic. it was nip and tuck for most of the final round — the northern irishman drawing level with the chinese leader and eventual winner li haotong. a couple of waywrd shots cost mcilroy though. a final hole birdie saw him finish on 22 under but that was one shot behind the winner. —— mcilroy. if someone had told me at the start of the year you would finish third and second in your first two events i would have said i will take that but being in the positions i've been in, and having two close calls the first couple of weeks of the year, it's a little difficult and i think the competitor in me is very disappointed right now, i wanted to win, i always want to win. and i didn't do enough when i needed to. england's netballers beat south africa to claim the runners up spot in the quad series. they held off a fightback injohannesbury to secure their best ever finish in the tournament. world champions australia beat new zealand earlier to regain the trophy. cheshire phoenix have won the british basketball league cup finalfor the first time in their history, beating worcester wolves 99—88 at the birmingham arena. cheshire led the wolves byjust a point at half time. but they asserted their dominance in the third quarter, storming to a 14—point lead. worcester fought back in the closing stages, but were unable to close the gap. in the women's cup final nottingham wildcats beat caledonia pride by 70—66. they were beaten in their first ever final last year but came through a close finish to take the title this time. a reminder of our top story this evening — roger federer has won his 20th grand slam title at the australian open beating marin cilic in five sets. and what a final it was. that's all from sportsday. there'll be more sport here on bbc news throughout the evening. now on bbc news, click. ah, the streets of san francisco. mecca for technology innovators and aficionados. a destination where the cult of geek reigns supreme. everyone‘s got that billion—dollar idea here and everyone wants to save the world. the ethos of nothing is impossible runs in the veins and twitter feeds of every twentysomething zuckerberg wannabe. now silicon valley is taking on life's biggest challenge, death. dave lee has been looking at how silicon valley is trying to help us all live longer. this will be my last mealfor 36 hours. like a growing number of people in silicon valley, i'm about to try fasting, something some here believe could contribute to extending our lifespan. my advice to you, just sleep in really late so you don't have to deal with it! kristen brown is a biotechnology journalist. she tells me living longer is becoming something of an obsession for many techies. we do tend to see people notjust thinking of their body as a machine but talking about it metaphorically as a machine. are they actually making any progress? it's growing so quickly right now, we understand so much more this year than we did last year even but the other thing about science is the more questions you answer, the more questions there are. 0ne incredible idea being tested here can be traced back to this man, paul bert. in the mid—1800s, he claimed if you took an old mouse and literally stitched it together with a young mouse, the old mouse would become more agile, have a better memory and heal more quickly once it had the young blood flowing through its veins. of course we can't start stitching humans together, but there is a start—up that thinks it can do than expected thing. alkahest is a california based start—up that believes weekly injections of blood plasma from young people could fight the onset of alzheimer's. we treated these patients once a week for four weeks with one unit of plasma, and we found the treatment was safe and very importantly, although it was a short study to see learning and memory improvements, but it was good enough to see some near—term improvements. the team said it found those treated were more capable of basic daily tasks and more aware of their surroundings. encouraging but farfrom conclusive. bigger trials are happening soon. we are basically fertilising the brain so to speak with this protein cocktail. to get some answers on whether or not these fantastical ideas could actually work, i went to visit one of the world's foremost experts on ageing. one of the ideas we're looking at is fasting and how that can perhaps rejuvenate the body in some way. is that true? what's the science behind that? fasting elicits a response in your body that triggers a protection against many of the diseases associated with age. of the diseases associated with ageing. so there's growing realisation that multiple forms of fasting might actually be beneficial in the long—term. one of the more perhaps outrageous ideas is that you can transfer young blood into an older person and that will rejuvenate and slow the ageing process, is that true? first let's talk about the science in mice. it is actually amazing work. the science is really strong. now, taking this and bringing it to humans is a completely different story, so the idea for example that one would take human plasma or human plasma product and give it to humans to prevent ageing is, in my opinion, lunacy. finally, my 36 hours were up. i'm not sure it's worth it, the lows i had last night and this morning were awful and to do that regularly i think might lead to a longer life but it certainly wouldn't be a happier one. what could be really interesting, though, is if these companies can recreate the positive effects of fasting without the hard work of having to go without food for such a long period of time. but for now, i think i'm going to choose breakfast. now, we've been looking at various ways to try and extend human life, possibly indefinitely, but the researchers can't do it yet and so, until they can, there are those who are offering to put your life on pause. marc cieslak has been to arizona to meet the self—preservation society. death and taxes, as the saying goes, are the two things none of us can avoid. what about if there was a workaround for death, some way of extending our physical existence on this planet? alcor was founded in 1972 in order to preserve people from the point of death, freeze them and then when technology is sufficiently advanced revive them in the future. a process it calls cryonics. this is an interesting infographic on the history of cryonics, which starts actually as far back as 1773, when benjamin franklin thought about the future of america and speculated that maybe he could be pickled in a vat of madeira with his best friends to see how the country came out. what goes on in this space here? obviously this simulates a procedure you would normally perform when somebody dies? exactly. we have to wait for the legal death to be declared. at that point we move the patient from the bed to the ice bath. we're gonna cover them with ice. and at the same time, even though they've been called