Video captures tornado ripping through small town in Russia

Video captures tornado ripping through small town in Russia (0:56)

Amateur video reveals power of Oklahoma twister

Amateur video reveals power of Oklahoma twister (0:53)

Scenes of devastation from the Moore, Oklahoma tornado

Scenes of devastation from the Moore, Oklahoma tornado (1:50)

Massive tornado leaves trail of destruction in Oklahoma

Massive tornado leaves trail of destruction in Oklahoma (1:14)

Technologists say apps can aid in Asia

Technologists say apps can aid in Asia (2:00)

Cyclone kills at least six in Bangladesh

Cyclone kills at least six in Bangladesh (0:50)

BP's Gulf spill payment problem

BP's Gulf spill payment problem (1:46)

Bangladesh cyclone kills six

Bangladesh cyclone kills six (0:55)

Myanmar's displaced flee cyclone

Myanmar's displaced flee cyclone (0:57)

Evacuations underway in Bangladesh ahead of cyclone

Evacuations underway in Bangladesh ahead of cyclone (0:41)

Popocatepetl continues spewing ash, gas

Popocatepetl continues spewing ash, gas (0:43)

Mexico volcano continues spewing smoke and ash

Mexico volcano continues spewing smoke and ash (0:37)