Giving Deshaun Watson a fully guaranteed $230 million contract has turned into another disaster for the Cleveland Browns

Scientists believe they have discovered the cause of the megalodon's extinction – and no, it’s not Jason Statham. Experts have been conducting research on fossils of teeth from the biggest species of shark the world has ever seen, which went extinct around 3.6 million years ago and measured at least 15 metres long. Research published in the journal Proceedings of the National Academy of Sciences explains that the animal was actually partially warm-blooded. Unlike most cold-blood sharks, the body temperature is thought to have been around 27 degrees. The temperature is higher than the sea temperatures around the time. Sign up to our free Indy100 weekly newsletter Study co author Robert Eagle, who is professor of marine science and geobiology at UCLA, said [via CNN]: “We found that O. megalodon had body temperatures significantly elevated compared to other sharks, consistent with it having a degree of internal heat production as modern warm-blooded (endothermic) animals do.” They were able to prove that the animals were warm-blooded by analysing how carbon-13 and oxygen-18 isotopes were closely bonded together in the fossilised teeth. Senior study author Kenshu Shimada is a paleobiologist at DePaul University in Chicago, who said: “A large body promotes efficiency in prey capture with wider spatial coverage, but it requires a lot of energy to maintain. “We know that Megalodon had gigantic cutting teeth used for feeding on marine mammals, such as cetaceans and pinnipeds, based on the fossil record. The new study is consistent with the idea that the evolution of warm-bloodedness was a gateway for the gigantism in Megalodon to keep up with the high metabolic demand.” The fact it was warm-blooded means that regulating body temperature could have been the cause of its eventual demise. The Earth was cooling when the animal went extinct, which could have been a critical factor. “The fact that Megalodon disappeared suggests the likely vulnerability of being warm-blooded because warm-bloodedness requires constant food intake to sustain high metabolism,” Shimada said. “Possibly, there was a shift in the marine ecosystem due to the climatic cooling,” causing the sea level to drop, altering the habitats of the populations of the types of food megalodon fed on such as marine mammals and leading to its extinction. “One of the big implications for this work is that it highlights the vulnerability of large apex predators, such the modern great white shark, to climate change given similarities in their biology with megalodon,” said lead study author Michael Griffiths, professor of environmental science, geochemist and paleoclimatologist at William Paterson University. Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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Connor Roberts hopes he can help ignite more favourable memories for Wales in their key Euro 2024 qualifier against Turkey. Monday’s clash in Samsun has gained added significance following Wales’ shock 4-2 home defeat against Armenia that left them third in Pool D, two points behind Turkey. While the group still has a long way to run, Wales’ automatic qualification hopes will be dealt another setback if they suffer a second successive loss. Wales delivered, though, against Turkey at Euro 2020, with Burnley right-back Roberts scoring in a 2-0 victory in Baku. “To jog the memory of what I did at the Euros will be brilliant,” Roberts said. “But that is in the past and I have to create more memories as an individual and as a team. “It is the goal when everything is said and done that I will probably look back on and think I can’t believe I achieved that or did that. “They (Turkey) might be out for revenge, but whether they are or not we have to go there and stick to what we are good at. “It has been a long time since then. I don’t really remember games I lost in the past.” Roberts is back on the international stage after an outstanding season with Burnley that saw them clinch the Championship title and secure a Premier League return. And Roberts has hailed the influence of Burnley boss Vincent Kompany, who recently signed a new five-year contract with the Clarets. “I can’t express how good Vincent and his staff are. To know they are going to be there going forwards is brilliant because you learn so much from them,” he said. “I thought I knew quite a lot about football, about how to play and what to do. But this season working with them, now I know a lot more. “When I watch games now, almost the messages he portrays come into your head. You know what to do in every situation, from build-up to attack to defending in different parts of the pitch. I think Vincent will go and have that Man City job one day Connor Roberts “I feel like 99 per cent of the time when the ball is on the pitch or at a set-piece I know what I am supposed to be doing. You know what you should be doing in every moment of the game. “I watch Manchester City, and we aren’t them, but I see massive similarities in the way we are asked to play. “We might not be able to do it as good as they can, but you do see similarities. I think Vincent will go and have that Man City job one day.” Read More Charity boss speaks out over ‘traumatic’ encounter with royal aide Ukraine war’s heaviest fight rages in east - follow live Jonny Evans says Denmark defeat ‘hard to take’ after late disappointment Kenny McLean savours special moment after scoring late Scotland winner in Norway Justin Thomas predicts shortest hole in modern US Open history could be ‘spicy’