By Roger Witherspoon Download and/or Print Article The White House, wasting no time lamenting the pending departure of embattled Nuclear Regulatory Commission Chairman Gregory Jaczko, has nominated Allison M. Macfarlane, a geologist with 20 years’ experience in public policy and nuclear waste issues to replace him. Dr. Macfarlane, who earned her doctorate in geology at the Massachusetts Institute of Technology and works currently as associate professor of Environmental Scienc