Solving the mammal brain size puzzle

A new study has revealed a surprising lack of support for widely-held explanations of why some mammals evolve larger brains than expected for their body size. […]

Heated debate on lizard sex

Sex is a complicated affair for Australia’s Jacky Dragon lizard. When an embryo is developing, one of the most important events is when it becomes either […]

Flexible brains make for right fit

Being stretchy and squeezable may be the key to finding space for the brain in mammals, including humans, according to new research. An international study, co-led by […]

Why rats would win Australian survivor

Australian rodents skulls all correspond to one simple, size-dependent shape that is more than ten million years old but it turns out this lack of change […]