a top surgeon that you have given us, that people i have had on the programme not so long ago, henry marchu have both been frank about the fa ct you have both been frank about the fact that you and others have sometimes made mistakes, sometimes you feel you have let patients down. we really want to know all this? well, perhaps i should ask you that. laughter. welcome a good hard to talk question. sometimes i think we would rather not know the degree to which chance is relevant in any serious intervention that you make. i think that is true that in heart surgery, we are i think that is true that in heart surgery, we are extremely honest about the downside. we give patients risks, calculated properly, scientifically, as percentages, we tell them the likelihood of death, likelihood of stroke, likelihood of not getting a good outcome. we tell them the benefits and we tell them to weigh these things so at least we are being honest. nowadays, patients no longer accept the patriarchal approach of well, you know, that you are, my good man. i know what's best for you. that's not good enough. i cert

christa: ade in cairo back in march, and that spectacular newu mis set to open later this year. off to australia next, where henryited the iconic outback town of alice springs, which has begun to slide off thi tourist mrecent years with low-cost airlines pulling out and several backpacker hostels closing down, but could pedal power be the answer? henry: yes, alice springs has launched a plan to turn itself hnto a world-class mountain-bikin. the combinationf beautiful landscapes and fantastic weather has made the trails around alice springs a local favr years, but the town wants to attract more international visitors.it the tey hopes to bring in nearly $70 million a year though biking tourism. man: oh! henry: clarke petri from outback cycling leads tours throughout the trails here. and today's a particularly hot day. it's about 40 degrees in the middle of the desert. why would anyone want to come out and try mountain-biking here? petrick: well, in the winter, the weather is absolutely perfect, so we don't have the storms, the rain, the cold. it's just beautiful, 25-degree days, really consistent weather. means the

. >> reporter: that day was march 6th, 2011 -- a raw and rainy sunday in tea neck, new jersey. henry rodzen was the first to spot trouble. >> reporter: what was happening that night? >> i had a flat tire earlier in the day, and i had to come back to fix it. it was raining, it was windy. it was just very miserable. >> reporter: when we met up with rodzen -- almost five years after that gloomy night, the weather had changed, but his recollections had not. >> started puttin' all the -- all my tools away. for some reason, i just happened to look up, and i saw smoke goin' across the street. >> reporter: from the corner house? >> from -- goin' across from the corner house, goin' across through right. so i said, okay, well lemme take a quick jog over, see what's goin' on. >> reporter: what henry saw, once he reached the corner of terhune and elm, removed any doubt for the former volunteer firefighter. >> as soon as i saw that there was a bright amber glow, i knew that was definite fire. so i decided to just quickly run back to my girlfriend, i said listen, call 911, there's a house that's o