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The News Feature ‘Weighing the world’s trees’ (Nature 523, 20–22; 2015) incorrectly described the photosynthesis measurements made by the Orbiting Carbon Observatory-2. Those observations


are made by the same spectrometers that measure CO2 concentrations. The News story ‘Researchers pin down risks of low-dose radiation’ (Nature 523, 17–18; 2015) incorrectly calculated an


‘expected’ death rate from leukaemia among the workers. Only 30 deaths were attributable to the radiation, and the relative risk increment posed by each additional 10 mSv was 3%. ADDITIONAL


INFORMATION The online version of the original article can be found at 10.1038/523020a The online version of the original article can be found at 10.1038/523017a RELATED LINKS RELATED LINKS


RELATED LINKS IN NATURE RESEARCH RELATED EXTERNAL LINKS RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Corrections. _Nature_ 523, 269 (2015).


https://doi.org/10.1038/523269a Download citation * Published: 15 July 2015 * Issue Date: 16 July 2015 * DOI: https://doi.org/10.1038/523269a SHARE THIS ARTICLE Anyone you share the


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