Jack Lief , Arena's chief executive, points out that the heart valve side effects were rare, and that a big clinical trial could settle the issue.
FORBES: Fat Chances
From the other side, greens are worried that the safety valve is too low.
ECONOMIST: Energy policy and the environment
It was feared that the lake would pour over the top and burst down the valley but fortunately the river gouged out an escape route along the side of the landblock which acted as a safety valve and limited the damage.
ECONOMIST: From the archive
And the idea of replacing a valve in a much less invasive manner looks as if it really is on the right side of history.
FORBES: New Heart Valves Prove We're Living In The Future
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