It's the thinnest part of the skull … which is why Maori warriors crafted a special weapon to crush it.

EVOLUTION
"Selection always comes at a cost, which is death, basically."
Warning: We cropped most of the holes from the honeycomb image, but the story contains a photo of a dried lotus seed pod.
One hundred European starlings released in Central Park in 1890 have turned into 200 million across the U.S. today. Now scientists are looking into their genetic diversity.
According to a recent study, naturally staggered sleep schedules means that someone is always awake and vigilant.
Ninety percent of frogs alive today descend from just three lineages that survived the extinction 66 million years ago.
These 200-ton ocean dwellers had a growth spurt 3 million years ago.
Scientists date the intriguing hominin remains to 335,000–236,000 years ago—and find three more bodies.
Environmental turbulence during the Ice Age created three different lineages of western spotted skunks.
There’s evidence to support both sponges and comb jellies' claim to the title, but the latest research, published in the new journal Nature Ecology and Evolution, lands hard in favor of Team Jelly.
Experts say octopuses, squid, and cuttlefish have been using “an alternative engine” for evolution.
It's about 400,000 years old.
Scientists argue that the sight of all the juicy food available on land propelled early marine vertebrates to grow legs and get out there.
The finds bolster the idea that the precursors to modern humans were a diverse bunch who routinely interbred with one another.
You're probably aware of some vestigial body parts, like wisdom teeth, that the human body doesn't really need. But did you know there are several muscles in that category as well?