Not all birds migrate south for the
winter. Winter is a hard season for birds, and many risk freezing to death.
It doesn't take much effort or money to provide shelter for them.
How a great air mass begins its lethal swirling
pattern
What causes tornados? Lanney, Sandia Park, New
Mexico
From
late winter to early summer, tornados sweep across parts
of the country, terrifying those in its path. In its 10-minute
average lifetime, the dark, slanted vortex can wreak devastation. On the 18th of March in 1925, the Tri-state
tornado raced across 220-miles of Missouri, Illinois and Indiana,
killing nearly 700 people, and leveling houses to their foundations. What causes this most violent of all storms?
Click to continue tornados /
Comment
Not all birds migrate south for the
winter. Winter is a hard season for birds, and many risk freezing to death.
It doesn't take much effort or money to provide shelter for them.
From
late winter to early summer, tornados sweep across parts
of the country, terrifying those in its path. In its 10-minute
average lifetime, the dark, slanted vortex can wreak devastation. On the 18th of March in 1925, the Tri-state
tornado raced across 220-miles of Missouri, Illinois and Indiana,
killing nearly 700 people, and leveling houses to their foundations. What causes this most violent of all storms?
