NATURE.COM/NATURE9 April 2015 £10

Vol. 520, No. 7546

RESEARCH CAREERS

POSTDOC OF THE FUTUREWhy permadocs must

become superdocsPAGE 144

BIOINFORMATICS

BIOLOGY BYTHE NUMBERS

Data analyis is undervalued in the life sciences

PAGE 151

ARCTIC PERMAFROST

COLDCOMFORT

Green-house gas release may be slow but prolonged

PAGE 171

EXTREME CHEMISTRYExperiments on rare lawrencium atoms illuminate a relativisticregion of the periodic table PAGES 166 & 209

T H E I N T E R N AT I O N A L W E E K LY J O U R N A L O F S C I E N C E

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PRIL 2015