Wagtail battles itself in award-winning photo
Grey wagtails don't take kindly to strangers – and one even wants to take on its own reflection in a car's wing mirror
The third factor: Beyond nature and nurture
We're more than the product of our genes and environment, twin studies show. If we could run our lives over and over, we'd turn out differently every time
Hobbyists tracked US spy satellites leaked by Snowden
The names of US spy satellites– including Topaz and Intruder – are revealed in leaked documents, but their existence was never much of a secret
How the US may try to destroy Syria's chemical weapons
The Pentagon has many tools to eliminate stockpiles of chemical agents – but any attempt will be risky, and possibly too difficult to carry out
Wristband unlocks your devices with your heartbeat
Forget passwords. The Nymi wristband proves your identity by listening to your heartbeat's unique rhythm
Are 'fire ice' methane hydrates the new fracking?
If schemes to extract gas from icy cages beneath the oceans are successful, don't be surprised to hear scare stories from people with vested interests
Skin-eating fungus is wiping out fire salamanders
A relative of the killer chytrid fungus that has devastated frog populations is sweeping through salamanders undetected
Victorian skiing holidays melted Alpine glaciers
Soot particles from increased rail transport and the booming tourist industry caused an extra metre of ice to melt each year in the mid-19th century
Zoologger: Miniature frog can hear with its mouth
Gardiner's Seychelles frog is one of the smallest land animals – bar insects. It's too small to have proper ears, but fortunately its mouth does the job
Wanna watch your volcano danger zone? Go fly a kite
With an erupting volcano continually messing up their island, the inhabitants of Montserrat have found a way to take aerial photography into their own hands
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