Really, twenty bucks and it charges in the daytime and gives back useful light at night. (treehugger.com)
No one denies that the 20th c has been warm in comparison to the LIA or even 19th c, so it appears to shed useful light on just how warm we are relative to the MWP. (climateaudit.org)
Stripped of the ominous rhetorical overtones with which the author surrounds it, the «strategy of openness» thesis does cast useful light on American motives and purposes. (firstthings.com)