The Computerworld story, "U.S. to use climate to help cool exascale systems" incorrectly referred to a time frame in the third paragraph. The correct span is 2019-2020. The story has been corrected on the wire and that paragraph now reads:

DOE is expected to deliver to Congress by the end of this week a report outlining a plan for reaching exascale computing by 2019-2020 and its expected cost.