Living organisms including humans are social when they live collectively in interacting populations, whether they are aware of it, and whether the interaction is voluntary or involuntary.
Giant penguins bigger than most humans roamed the Earth millions of years ago. Analysis of 37-million-year-old penguin fossils by a team of researchers from the La Plata Museum in Argentina shows that the so-called ‘colossus penguin’ stood at staggering 2 metres from toe to beak tip.
EN 
CS
DE
ES
FR
HU
IT
PL
PT
РУ
SK
TR
УК
AR
中文
