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A look back at some of our most popular articles.
The job of eradicating Australia's feral cats is not straightforward.
Apart from making us look cute, the chin serves no obvious purpose.
The research on a potential treatment for heart disease which revealed a side effect that sparked a sexual health revolution
The immune system may be responsible for post traumatic stress disorder.
Burns could one day be treated with sheets of nanoneedles.
Intestinal bacteria can boost production of the happy brain chemical, serotonin.
A new therapy jump-starts male members.
We ask a scientist to describe his research and why it matters.
Rock star turned physicist Brian Cox turns his attention to the story of evolution.
The dottyback fish is the only known animal to change colour to look like its prey.
Mice with Alzheimer's have responded to ultrasound therapy.
Cautionary tale of a lost species.
Mudskippers may help explain how land-based animals learned to eat.
Peacocks use their tail feathers to emit a sound inaudible to humans.
The most read articles from the Cosmos news blog over the past week.
Chameleons employ a masterful trick of nanotechnology.
Flowers lace their nectar with caffeine because bees like it.
Gold nanoparticles have been designed to kill cancer cells.
Asian honey bees are surprisingly co-operative.
Electrical stimulation can promote daydreaming.
Places most vulnerable to a disease outbreak can be detected from space.
Biological weaponry turns ladybirds into bodyguards for infant wasps.
Dutch chimpanzees learn to fit in with the locals.
Humans tend to accentuate the positive.
A new book re-examines Aristotle's contribution to our understanding of the natural world.