tokyo. travel plans of thousands of people are now in doubt as the ash cloud moves from iceland and further south. the uk s official weather center is telling cnn that this plume will cover all british air space within the next 24 hours. so far 252 flights, mainly out of scotland v been canceled. we want to talk to an expert who can tell us more about what s going on and a reality check of that ash. dr. watson is a lecture at bristol university and joins me now on skype. hi there. how much of a threat is this ash? oh, well, let s let s not if an aircraft flies through a dense ash cloud it s in real trouble. this stuff is like very, very fine sand or glass. you mentioned what would happen if you took a piece of sand paper to your car, that s roughly what would happen to an
rain of fire. more than a dozen bombs fall on tripoli as nato launches a massive air strike on moammar gadhafi s compound. look at this trail of destruction. the search for survivors after a deadly tornado flattens a town in the u.s. midwest. it s an unpredictable situation. changing by the hour. british authorities are saying, watch this space as a voluntarily cannish ice cloud from iceland creeps further south toward the uk and main land europe. uk s official weather service told cnn the plume of ash will spread into all of british air space within the next 24 hours. thousands of people are waiting to see if their travel plans are going to be disrupted. dozens of flights to and from airports in scotland are canceled. one airline is challenging advice not to fly. irish carrier ryan air says restrictions are totally unnecessary. most airlines will review the situation around 1 p.m. gmt. let s go to emily ruben. what s the latest information you re getting? well, as you