The News Feature ‘Survival of the fittest’ (Nature 513, 157–159; 2014) referred to the wrong Possession Island. The penguin work was done on the French Base d’Alfred Faure in the Crozet archipelago. The World View by Casparus J. Crous (Nature 513, 7; 2014) implied that Saudi Arabian scientists on highlycited.com were all at a single university. In fact, most were at one institution but several came from three other universities in Saudi Arabia.