Contrary to the belief that humans first walked on two legs on land, new research highlights how tree cover was integral to human evolution.

Existing evidence suggests humans started cooking 1,70,000 years ago. The current evidence pushes that timeline by more than 6,00,000 years.

A study of photographs reveals a steady decline in the length of rhino horns from 1886 to 2018. Researchers suspect that over time, humans have been killing rhinos with the largest horns, creating selective pressure against more prominent outgrowths.

Genetic variations that helped resist the plague might be increasing people's susceptibility to autoimmune diseases today.

"[F]ace processing in humans -- at least in adults -- is rigid even after prolonged real-life exposure to partially covered faces."

Researchers found that people had their most original ideas during the ovulation phase of their monthly cycles.

Researchers say it’s incredibly rare for this cultural transmission "to be documented on such a large scale in a non-human species."

The new findings reshape what we understand about human evolution.

“[T]his could provide important insights into whether dinosaurs had reproductive biology similar to that of turtles and lizards, or crocodiles and birds.”

Many scholars argue that the female orgasm is unlikely to be an adaptation, but rather, the evolutionary by-product of the male orgasm.

The findings have been 30 years in the making, and can offer insights into health and what makes our species unique.

We’ve evolved to select the healthiest looking partners.

The findings can help explore the role scent might play in human social interactions, and the ecological advantage it serves.

This evolutionary aspect reveals important quantities: "such as how many apples there are on the tree, or how many enemies are attacking."

Not having a tusk changes the anatomy and behavior of female elephants, disrupting the ecosystem. For male elephants, it can be fatal.

Researchers find that "evolution doesn't seek to optimize [our directions], but [says] 'sure, OK, that works, I'm not dead.'"

"Kissing -- like touching and smelling -- is an emotion-driven act that allows us to identify the most compatible and ‘evolutionary advantageous’ partner."

The evolutionary idea of “social parasitism" explains how social parasites exploit existing communal networks of one’s own species.