john mcmanus, bbc news, glasgow. north atlantic ocean? well, it's the aim of one man who is challenging himself to swim all the way from new york to london. sharks, jellyfish, not to mention the temperature and depth of the water. the man attempting the feat is michael ventre. he spoke to us a little earlier. i would love to be able to put my feet up in the evening and that is just not the case at the moment. i knew it would be a long slog. something where this would never be easy. a not people said getting to the start line was more difficult than the swim itself. people are doing incredible things around the world. there is unfortunately what you would call it competition and people are just you would call it competition and people arejust doing you would call it competition and people are just doing amazing things, raising huge amounts of money for charity, and with social media and so many online sources to get the message out, there is a lot of clutter a. it can be difficult. who knows, with the right person on

john mcmanus has more on the story.t—minute checks before four officials get on their bikes to measure the length of the great scottish run. the early hours of sunday morning the best time to do it with a police escort. they cycled the whole route. i caught up with them at glasgow's pollok park. many of the runners who took part in last yea r‘s event of the runners who took part in last year's event said they thought the course was shorter than usual. many runners carry their own personal mobile devices which measure the distance they are running. thousands of people took part in last yea r‘s half thousands of people took part in last year's half marathon. today's news that the course was too short by nearly 150 metres, or 164 yards, means all of their times are now invalid. the company behind the run says it mate mistakes. the course had to change in 2016 duty is scheduled scottish water works across the city, we found this out relatively late in the day and as a result with a changed the traditional route. we worked o

john mcmanus has more on the story.on their bikes to measure the length of the great scottish run. the early hours of sunday morning the best time to do it with a police escort. they cycled the whole route. i caught up with them at glasgow's

john mcmanus takes up the story.t—minute checks before four officials get on the bikes to measure the length of the great scottish run. the early hours of sunday morning, the best time to do it with a police escort. they cycled the whole route. i caught up with them in glasgow. many of the runners who took part in last's event said they thought the course was shorter than use. many runners carry their own personal mobile devices which measured the distance they are running. thousands of people took pa rt running. thousands of people took part in last year's half marathon. today's news that the course was too short by nearly 150 metres or 164 yards, means all the times are now invalid. the company behind the run says it made two mistakes. the course had to change in 2016 due to some scheduled waterworks across the city. we found this out relatively late and had to make changes to what is that what was the traditional route. we had worked on those plans and measurement was taken but u nfortu nately and measurement was

this man's name kept coming up, this guy john mcmanus.sual to be this scientist thrown into the midst of geopolitics. here is your name type thing. and his name came up because he had been the one to go and quantify all this environmental damage that had happened to these reefs in the south china sea. i thought, ok, i want to talk to this guy and see how he ended up in the middle of this big geopolitical debate. carol: john mcmanus, he is a professor of marine biology and ecology at the university of miami. talk to us about the research he did and what he saw, and why it is so important. >> so it goes back a long way. he had actually been based in the philippines for years, and he had done this very early study of exactly what was happening in the spratly islands. why the spratly islands, they are hardly islands, they are reefs and -- carol: you look at a global map, and they are like nothing. >> they are tiny, and that is what everyone is fighting over. this was back in the 1980's and early 1990's, he was in the philippines, and he was t

this man's name kept coming up -- john mcmanus.ist who suddenly is thrown into the midst of geopolitics. his name came up because he had been the one to go and quantify all the environment will damage int had happened to david wel s the south china sea. i wanted to talk to this guy. >> john mcmanus is a professor of green biology at the university of miami. talk to us about the research he did and what he saw. way. goes back a long -- professor of marine biology. >> it goes back a long way. he had done this early study of exactly what was happening in the spratly. the spratly islands -- >> you take a look at the global map -- >> they are tiny. 1980's andck in the 1990's. he was trying to figure out where fish were coming from. everywhere was overfished. he was turned to figure out how these fisheries were getting repopulated. looking at study paper maps with arrows on them where ships had drifted off to in the south china sea. he figured out the spratly's were the source for the fisheries on the coast and providing these replenishi