The National Academies

Researchers and other experts will explore the scientific, ethical, and policy issues associated with human gene-editing research at an international summit this fall.

At least 126,000 sites across the U.S. have contaminated groundwater that requires remediation, and about 10 percent of these sites are considered "complex," meaning restoration is unlikely to be achieved in the next 50 to 100 years due to technological limitations, says a new report from the National Research Council.