track that keep people moving. it s made a difference in the way people go around. reporter: round-abouts, not to be confused with bigger intimidating rotaries on the east coast, are designed to smooth swoop drivers into any direction, slowly guide them around, and just as easy let them out and on their way. since cars don t stop, commuters save time and officials say use 30% less gas at intersections. a round-about can handle four to five times the amount of traffic in the same amount of time that a spotlight can have. reporter: and the mayor says that accidents are way down, improving insurance rates and the city saves money, too. we don t have to buy a $150,000 signal. we don t have to buy electricity. we don t have to replace it when all that equipment wears out. reporter: some drivers and pedestrians don t like round-abouts, but local
the governor of louisiana says the record water levels could last more than a month. houston s newspaper reports that doctors will perform major surgery on gabrielle giffords. but first, we have an idea of who will leave al-qaeda and it s not who you d expect. dan rivers is in london. who is this man? this is saif al-adel, who is a former egyptian special forces officer, a veteran of al-qaeda, the chief of their military committee for many years. a veteran of afghanistan and somalia. he s got a long record as a terrorist. he has been appointed in a caretaker capacity to sort of look after the organization while they try and find a permanent replacement for bin laden, which may be sa hary. that has been hampered by the intelligence that the u.s. has seized at bin laden s layer in pakistan. do we know where he is now? saif al-adel we understand is in afghanistan. we re not sure where, but his talked from one source, a former libyan islamist, now turned his back on ter