this shoreline here at lake turkana has seen some drastic changes in recent times.is here now butjust a few months ago it was even further back than this, beyond those trees. we do advise that nobody enter the water. and, protecting australia's beaches. hywel griffiths reports on how shark nets are keeping the swimmers safe but harming marine life. last year, they trapped over 130 of the targeted more dangerous sharks but they also trapped another 600 marine animals, including dolphins, rays and turtles. it is two weeks since he took the oath of office and president trump's administration has already issued dozens of orders, many of them sharply dividing opinion. but the president's supporters say he's simply fulfilling the promises he made on the campaign trail, whether people like them or not. nick bryant has travelled to the southern state of tennessee to see how people are taking to their new president. the hills of eastern tennessee, a landscape that reminds us that it wasn't just the rust belt that won donald trump the presidency, but the bible belt, as well.