With no conclusive study, physicians still debate risks to children who compete in marathons, like muscular-skeletal injuries, stunted growth, burnout, parental pressures and the ability to handle heat stress.
But in the process of debating risks and costs, there should be no tarnishing of market-based policy instruments.
"Officials Long Debated Risks of Anti-Drug Peruol in Peru" (front page, May 22) calls the entire notion of source-country interdiction into serious question.
Doctors have debated this risk for years, but the authors of the study were skeptical of it, and their report may sway others.
The order to evacuate Iitate did not come until weeks after the meltdown, as local authorities debated the risk posed to the village, which had only recently been voted one of Japan's most picturesque places.
The issue of what constitutes an adverse effect has been debated in risk assessment circles from time to time.
In the biotechnology debate, risk has long been emphasised over economic benefits.
And the public hotly debated the risks adventurers -- some skilled, some not -- court in the name of one more summit.
Instead, their accounts reveal how slaves and free blacks struggled to verify emancipation rumors and debated the risks of overt resistance.
As MPs debated the risks and benefits of a no-fly zone, he said it was the only hope for about a quarter of a million people in rebel-held Aleppo.
Over the last few decades, government planners and geologists in India and in neighboring countries have debated the risks near the Himalayas, where India has invested heavily in hydroelectric dams and where many city populations have grown tremendously.
