31.   Overturned tractor-trailer rigs blocked major highways in parts of Iowa and Wisconsin.

32.   Police, fire fighters and army troops were working to open the highway and clear the road of trucks that had jackknifed and blocked the highway.

33.   Over the weekend, they blocked a highway outside of Seville.

34.   Protesters blocked a highway connecting northern Greece to Bulgaria for about an hour.

35.   Protesters blocked major highways north and south of Tuzla, tying up U.S. convoys and civilian traffic for hours.

36.   Police believe the gang planned to use the cement mixer to block the highway in order to rob a postal van.

37.   A few hundred strikers continued blocking highways Thursday around Donetsk and in mining towns in the foothills of the Carpathian Mountains.

38.   A major earthquake shook Central America on Saturday, destroying churches, blocking highways and collapsing a hillside that buried hundreds of homes.

39.   A landslide blocked a highway outside the town.

40.   An unmanned experimental NASA aircraft being tested for environmental research crash landed in the Mojave Desert on Friday, sustaining moderate damage and partially blocking a highway.