Congressional Republicans are investigating e-mails stolen from a British climate change research center that they say show scientists attempting to suppress data that does not support man-made global warming.
Oklahoma Sen. James Inhofe, a global warming skeptic, sent letters Tuesday to the inspectors general of several agencies and to scientists asking them to retain records related to the e-mails.
House Republicans want to know how much the scientists contributed to a widely cited U.N. report on climate change. The report has served as the basis for action in Congress and by the Obama administration to reduce greenhouse gases.
One of those scientists, Kevin Trenberth, said the e-mails do not show scientists colluding but arguing vigorously about the science.