as is judy woodruff's interview with texas congressman john paul can we'll talk with other g.o.p. contenders in the coming months. >> suarez: again, the major developments of the day: the hunt for moammar qaddafi intensified as new battles raged in libya's capital. hurricane irene blasted the bahamas, with winds of 115 miles an hour and headed toward a weekend strike on the u.s. east coast. and wall street pulled back, after a three-day rally. the dow jones industrial average lost more than 170 points. find more about the coming storm on our website, kwame holman has the details. kwame? >> holman: track hurricane irene's path using a special map with data from n.o.a.a., google and others. that's on the rundown blog. is eating healthy bad for your family's budget? our health unit examines the costs of good nutrition and offers strategies for smart shopping at the grocery store. plus we look at nasa research on how black holes can consume a star. watch an animation on our science...