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Articles on Evolution

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New research shows golden orb weaving spiders are larger in cities compared to their relatives in the bush. Lizzy Lowe

City spiders are getting bigger — but that’s a good thing

Find yourself thinking that the spider living in your garden is the biggest you’ve ever seen? You could be right. New research shows some spiders are getting larger and even doing better in cities than…
Australia’s southern grass skink gives birth to live young and a valuable species for understanding placenta evolution. Jacquie Herbert

Lizards help us find out which came first: the baby or the egg?

Have you ever wondered why we give birth to live young rather than lay eggs? Scientists have pondered this for a long time and answers have come from an unlikely source: some of Australia’s lizards and…
A flock of early birds (Longirostravis) preen one of their large dinosaurian relatives (Yutyrannus). Brian Choo

How small birds evolved from giant meat eating dinosaurs

Spectacular transitional fossils, many from northern China, provide overwhelming evidence that dinosaurs evolved into birds and thus didn’t all perish when the deadly meteorite struck at the end of the…
Prior to Hamilton’s rule, biologists puzzled over how cooperative behaviours evolved. Christian Collins/Flickr

Origins of altruism: why Hamilton still rules 50 years on

Fifty years ago this month, evolutionary biologist William Donald Hamilton published a solution to one of biology’s most enduring mysteries: why does altruism exist? Altruistic behaviours are those where…
This half-million year old skull is helping answer controversial archaeological questions. Javier Trueba/Madrid Scientific Films

Chew on this: Neanderthal jaws evolved before brains

Ancient remains have confirmed that the face and jaw evolved before the rest of the skull in Neanderthals and early human ancestors. Research conducted at the Sima de los Huesos (Pit of the Bones) archaeological…
Why the differences between humans and other animals? Flickr/simon thomas

Brain versus brawn: the evolution of humans and other animals

One of the most important questions we can ask – and one that continues to take up much of the time of scientists, philosophers and the religious minded alike – is why are humans so different to the rest…
One among many inevitable phenomena? edwardmusiak

Could biology explain the evolution of religion?

For a biologist like me, the interesting questions about religion have always been where did it come from and why did it evolve? I taught evolutionary biology in a Catholic University in the most Catholic…
Not pretty. Pete Seidel/Jack Poland/CDC

The bug that lost a few genes to become Black Death

About 6,000 years ago, a bacterium underwent a few genetic changes. These allowed it to expand its habitat from the guts of mice to that of fleas. Such changes happen all the time, but in this particular…
Stay away from this, flies. eoghann

How the zebra got its stripes: to ward off flies

Zebras’ stripes have baffled biologists since Charles Darwin. Many hypotheses have been proposed regarding their purpose but, despite hundreds of years of study, there remains disagreement. In an attempt…

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