But we know what can cause mine explosions, and we know how to prevent them.
When while I saw a prominent Republican senator declare that raising taxes on wealthy Americans would cause economic Armageddon, we know from experience that that is actually not the case, and we know from the Clinton budget in 1993 what the result of that budget deal was and the decisions made then -- the result was the longest peacetime economic expansion in our lifetimes.
WHITEHOUSE: Congressional Black Caucus Foundation Phoenix Awards Dinner | The White House
We know how effective it is, and we know what safety problems it could cause.
Whether they had anything to do with his cause of death we don't know.
Today, we know the biggest cause of that crisis was reckless behavior in the housing market.
And we do know the cause of freedom will once again prevail .
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"The only absolute fact is that we do not know the cause of this accident, " it said.
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We know that a major cause was the bursting of a housing bubble that had been driven by the extension of easy credit.
So what do we know about the conditions that cause these violent storms?
Instead, Mr. Weill began by saying something we didn't know about the cause of the financial crisis.
We all know people who were running in it, and perhaps we donated to the charitable cause they had registered with so they could gain entry.
My family and I live near where the storm will hit and we already know the havoc American weather can cause.
While news of a debilitating attack on Iran's nuclear installations is a cause for celebration, at this point, we simply do not know enough about what has happened and what is continuing to happen at Iran's nuclear installations to make any reasoned evaluation about Stuxnet's success or failure.
Fracking is under fire, as we know, from those who insist that it does or can cause huge problems to the surrounding environment.
The FBI wants to know how we got into this financial mess and whether the cause was simply greed or whether laws were broken.
Now, new calculations frame the particle as not only cause for frowns, but an indicator of the end of the universe as we know it.
"We are acutely aware of the fact that this is only the beginning of a long road to prove that, as we know, Oscar never intended to harm Reeva, let alone cause her death, " Arnold Pistorius said in a statement.
While adequate weight gain during pregnancy is important for proper development of your baby, we now know that gaining too much weight is not good, as it can cause problems such as gestational diabetes, preeclampsia, increased risk of Caesarean section and infection, and more difficulty during labor.
The issue has always been -- and we have been very transparent about what we have known, when we have known it, and when what we know has changed as more facts have come to light in terms of what was the cause of the attacks, who was responsible, what its relation to the video was, if any.
We know that he's cool and patient, but maybe his drooping recent poll numbers will cause him to start drawing some lines in the sand.
CNN: Borger: Congressional Democrats messing up on health care
Mr. BRIAN FRANK (Demolition Crew): We need New Orleans to come back, you know, to bring the city back, 'cause...
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