Warnings on sitting and texting, a heads up on bird flu and a
debate on pot   This week brought the usual onslaught of
warnings, about the dangers of everything from sitting to
texting -- and a debate about just how dangerous one drug might
be. Here's what you need to know:  The president started a
fight.  This time it wasn't about budgets or health insurance.
It was about pot. In an interview with The New Yorker, President
Obama said marijuana was "a bad habit and a vice," but not more
dangerous than alcohol. USA TODAY found medical experts who
strongly disagreed with the president – but in both directions,
with some saying he was too easy on a dangerous drug with no
benefits and with others saying pot was actually much less
dangerous than alcohol.  You don't want to have a heart attack
this weekend.  Or any weekend or night. Of course, you don't
want to have a heart attack at all. But a new international
study found that heart attack patients who come to hospitals at
off hours get slower care and are 5% mor