Environment, we had to do it. Man you start finally seeing data. So you start hearing hearing whales, you start you suddenly have eyes underwater. Narrator a 20year journey is nearing its end. But for the comprehensive Nuclear Test Ban treaty organization, which monitors our entire planet for Nuclear Tests, the work is far from over. To complete s capability to hear Nuclear Explosions in the worlds ocans, ctbto ust first install a hydroacoustic monitoringtation in one of the most remote places on earth the ocean floor halfway between africa and antarctica. When completed, hydroacoustic station number 4 at the crozet islands will join the ctbto International Monitoring system to detect an alert the world of nuclear testing. Jerry stanley installing a hydroacoustic station is a complex social engineering task. The hydroacoustic system were installing at crozet is one of 6 hydroacoustic stations. But these hydroacoustic stations are part of the International Monitoring system, which has over 300 stations listening for potential Nuclear Tests around the globe. Man 10. Narrator we proceed to develop more acurate andestructive nucle weapons. Over 2,000 Nuclear Bombs were detonated in theast half of the 20th century [explosion] but in 1996, the Global Community said enough and signed the United Nations comprehensive Nuclear Test Ban treaty. Today, 183 countries have voluntarily agreed to stop nuclear testing. But while signed in good faith, the mission of the ctbto is to verify the treatys compliance with hard data. Stanley were moving towards the final stages now of installing the hao4 station, but we were working in the roaring forties, so the weather can be very unpredictable. Mario zampolli those places, the roaring forties, are legendary among sailors and people who work at sea as some as some of the most difficult oceans in the world. You have what is called an unlimited fetch, currents that are also merging, coming down from south africa, merging with certain polar currents, that go all around the world, really undisturbed. In these difficult conditions was really something that put a lot of stress on everybody, on all the teams. You know that youre not afforded, youre not allowed many mistakes. Patrick grenard of course its not only a harsh environment above the sea surface, its also a harsh environment underwater. But we knew that we had a mission to accomplish. It was to install that station despite the difficulties, despite the harsh environment, the complexity of the project, we had to do it. Man once we get going, we can adjust it, ok . Narrator after more than 4 years of meticulous planning, two triplets of underwater microphones called hydrophones are finally loaded onto a specialized cable ship. Stanley we have to be very careful loading our system on. We have a lot of cables connecting the system together, and theres also some delicate electronics, the laser systems, et cetera. We have specialist crane operators and 10 people 10 peopleplus supporting the loading. Man [indistinct] stanley and then we transit to the cable factory in port smith. Narrator it will take 3 days to load 120 kilometers of underwater cable. And another 5 weeks to reach the crozet islands in the south indian ocean. [man speaking french] [penguins squawking] [daniel fouquet speaking french] [fouquet speaking french] zampolli several experts advised us that a good time to be there would be between december and february. However, it turns out that december was just apparently one of the worst ones theyve ever had on record. Man whoa. Zampolli what was happening there was that there were these systems brewing up south of south africa and being launched by the winter waters like frisbees. Freezing cold hurricanes, with snow, hail, and the nd starts to bebout more than 100 miles an hour, you have to go down and walk on all fours and work your way up, because dinner is up at the base. [laughs] narrator brief breaks tween passing storms allow just enough timeo deploy the hydphones to the sea floor. En all systems e go, the ship releases the orange floats from their anors, lifti the underwater microphones to their intended depths. Zampolli and then. Bangyou see these things arrive and then you start finally seeing data. You start hearing whales, you start. You suddenly have eyes underwater. Narrator from the indian ocean down to the arctic sea, from the atlantic to the pacific, hydroacoustic station number 4 at the crozet islands is now online, relaying data in real time to ctbto headquarters in vienna. The data is analyzed and shared with its Test Ban TreatyMember States almost as fast as it comes in. With 90 of its entire International Monitoring system in place and its capability to monitor the worlds oceans complete, the ctbto can detect and alert the world to any potential nuclear test anywhere on the planet, 247, 365 a year. [indistinct] [rumbling] [beeping] [doctor speaking english] [leader speaking arabic] [girl crying] [speaking arabic] [second girl speaking arabic] [beeping] [indistinctonversatn] [woman speaking english] [mother speaking arabic] [leader speaking arabic] [girl speaking arabic] [doctor speaking english] [chatter, rhythmic clapping] [leader on loudspeaker] [whistle blows] [leader speaking arabic] [music playing] unrwa worker assalaam alaikum. Class waalaikum salaam. [siren] [woman speaking japanese] announcer 2007, and little samba kuli bali is on his way to make medical history. Hes one of the first children to take part in a trial for a new vaccine against deadly meningitis. Marie many countries in sub Saharan Africa have called for these vaccines because of this dreadful and vastating disease which is called epidemic meningitis which was