In what's being called the single deadliest tornado in American history, the death toll caused by Joplin, Missouri's devastating twister has now climbed to 117 people, according to CNN. The cable network's website reports the cost of the damage caused by the tornado could reach upwards of $3 billion.
USA Today explains why the twister wreaked such havoc:
The Missouri National Guard has been on the ground in Joplin since soon after the disaster hit, helping with search and rescue efforts. The Pentagon Channel has the latest:
