31.   At first, the scientists thought the tree shapes and other, circular formations might have been caused by small gas pockets exploding under sand dunes.

32.   Bomb explodes under government billboard.

33.   Chechen separatists also denied any role in the blast, which came from a bomb that exploded under a subway seat.

34.   Earlier on Thursday, a remote-controlled bomb exploded under a Russian military truck, killing one border guard.

35.   Eight people were killed last Wednesday when a bomb exploded under a vegetable stand in the market in Blida, the main town in the region.

36.   George Mitchell was speaking on British television the day after two anti-British militants and a bystander were injured when a bomb exploded under a moving car in Belfast.

37.   He commanded an artillery unit, and was wounded when a mine exploded under his vehicle.

38.   Homemade bombs exploded under the trucks and the crippled vehicles were then fired upon.

39.   Highlighting the tensions, a bomb exploded under a car of a Muslim candidate in a Beirut neighborhood on Wednesday night, security officials said.

40.   In another attack Sunday, a bomb exploded under a campaign bus of the main opposition party, Motherland, in the southern port of Antalya.