But this would not necessarily exclude the possibility that life or the remnants of past life persist below ground, where conditions could be more benign.
Malaika founder Kristen Kenney has a pretty good day job (she is an interactive correspondent for Fox Sports and covered the 2012 London Olympics), but much of the past three years of her life have been devoted to building the nonprofit.
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Half of patients with the condition do not survive past the first week of life, according to the National Institutes of Health.
Some 12, 000 children in 46 countries had been affected by then, with only 8, 000 of them surviving past the first year of life.
Yet the idea runs deep, in British life of the past half-century, that a true toff must be hushed and slightly ill at ease with his own toffery.
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This breakthrough has the potential to move us beyond the divisive debates of the past by extending the frontiers of medicine without the destruction of human life.
The Baby Boomers are well past the heavy drinking stage of life, and Generation Y (made up of current 20-somethings and early 30-somethings) tends to prefer flavored cocktails over beer.
But while the divisions and disputes may be part of life here, the common past uncovered by science is a precious reminder of just how much the Lebanese share.
At the time, there was considerable uncertainty among demographers and actuaries about whether or not the substantial increase in life expectancy seen in the past couple of decades would continue or start to tail off.
So beer drinking was one of the things that reminded the Sumerians that they were different from the people of the past who hadn't had any of the trappings of modern life.
"We had urged the L.A. Times not to run those photos, " Mr. Panetta said, adding publication of similar images in the past led to violence and loss of life.
Job security doesn't exist, the trades and professions of the past have largely gone and life-long careers are barely memories.
So the following year, with a tip of the hat to his past life sparring over corporate assets, Pinault prevailed in a vicious battle with the Guggenheim Foundation to take over the nearly 40, 000-square-foot Punta della Dogana.
In the mezzanine, commuters will walk past life-size images of New Yorkers from the 1940s.
The vast majority of us get past these dark thoughts and learn to cope with the trials of life.
While Chicago landmarked the building, there is no hint of its past life - no plaque marking the spot or jazz tchotchkes for sale.
The group studied so-called "C3" plants, the most prevalent type of plant life on Earth for the past 400 million years.
One of the more obvious fallacies of modern life is that the future will be like the past.
The 45-year-old South African, who has been in charge of the Irish side for the past four years, cited pressures of family life for his decision.
It tells the story of the Wood family who, in the past, bought their music and way of life to Wales.
This makes sense because of the improvements in life expectancy and health status of the elderly that have occurred over the past 40 years.
Because of this, it seems to me that in the past decade or so, the half-life of our memories has become artificially extended.
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Aaron, who has been reportedly reluctant in the past to agree to a film version of his life, will consult on the film.
Beck knows that most of his supporters are white Americans, scared of losing their way of life, nostalgic for a rosy version of the past that may never have existed.
Her words rang true with me and I thought back on the past few years of my working life.
Dasi has been living alone in Vrindavan for the past 15 years and feels pushed into dedicating her life to the devotion of Radha.
And I think that's one of the reasons people have seen him deliver that so passionately over the past couple of days, because it kind of reminds him of all the years he spent in public life.
Devaney produced the cross of his life from out wide on the right and Foster rose highest to nod the ball past the flailing figure of Charles Itandje, who could only help it into the net.
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