The whole process is not without harmful effects either.
Young brains need to develop without harmful levels of stress hormones.
In other studies, Levy and his team are looking at ways to render bacteria nondestructive and noninvasive, so that they might enter the body without harmful effects.
Even without harmful pathogens from land, "I think they would be dying from something else," said James Estes, a marine ecologist at the University of California, Santa Cruz.
In this manner, more of the original waste may be safely stored, or permitted to accumulate without harmful effects to the organism, until it can be eliminated.
Their ceramic garden stools are fired in a wood kiln and glazed clear, without harmful colorants; $1,625 each from the Q Collection, 915 Broadway (20th Street), Suite 1001, (212 529-1400; qcollection.com.
His administration has declared its unqualified support for a shift from the internal combustion engine to fuel cells, which use hydrogen to produce energy without harmful emissions (see article).
If only "high-quality" individuals – those without harmful mutations – get to pass their genes on to the next generation, then the genetic benefits derived from sexual selection offset the costs of sex.
Although light boxes are often said to work by providing light (without harmful UV rays) for 30 minutes to an hour a day, the research evidence is not conclusive.
Although he insisted he was not calling for "a free-for-all where everyone goes around taking drugs," Brand said that he felt some people can take drugs safely and without harmful consequence.
An important part of the answer lies in a court of appeal judgment from 1998, which says single homeless people are not given priority for housing assistance when homeless, unless they are "less able to fend for himself than an ordinary homeless person so that injury or detriment to him will result when a less vulnerable person would be able to cope without harmful effects".
