The Oklahoma Medical Examiner's Office has been told to expect about 40 additional bodies. At least 51 people have already been confirmed dead. The official death toll will not rise until the bodies are processed.
When investigating a crime, police can follow a trail of phone calls and emails, but text messages are much harder to track down. Now, there's controversial, new push to persuade Congress to make it easier to see what you're typing and receiving on your cellphone.
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