Pigeons fly outside St. Stephen's Cathedral, Vienna

Does a truck carrying birds get lighter when they take off? New bird measuring kit solves physics riddle

Previous tests showed that the weight would stay the same — but new precise measurements show that it would actually fluctuate

A thresher shark gives birth off the Philippines

Rare shark birth photographed for the first time

The picture was taken during a research dive in the Philippines in 2013

Trunk and disorderly: The elephant attacked several cars in behaviour blamed on the mating season

Thailand's Khao Yai national park facing jumbo-size traffic problem after elephants attack cars

The aggressive behaviour is a result of the mating season

The Antarctic has a population of 4,000 - but what does it take to work in a wilderness of 70-knot winds and marauding penguins?

A century after Shackleton set out to conquer the Antarctic, thousands of people call the seventh continent home over its summer months, from sailors to scientists and conservationists to climbing instructors
The New Forest; it is feared that Britain’s forests could suffer a similar fate to woodlands in much of the US, where vast stands of trees have been wiped out by beetles

Trees under threat: The oak, beech and birch could be lost if Britain does not act quickly

They help define our landscape, but it could be radically altered over the next century unless steps are taken to stop the onslaught of pests
Conservation groups have appealed for cotton mittens for koalas

Conservation groups appeals for mittens for koalas with burned paws

Conservation groups have appealed for people to make cotton mittens for koalas whose paws were burned in major wildfires in Australia.

Dozens of Pikachu characters parade at the Landmark Plaza shopping mall Tokyo on 14 August, 2014

China faces criticism from conservation scientists for attempts to exterminate real-life 'Pikachu' with mass poisoning

Ecologists hit out at classification of the mouse-like 'pika' as a pest – and say policy-makers are ignoring all the evidence in their favour

If you upturn a tortoise, it will find its feet again, thanks to a clever combination of shell shape and leg and neck manoeuvres

The topsy-turvy world of the tortoise: a smaller shell helps them to walk tall

Larger specimens are less adept at righting themselves when they are flipped on to their backs, study finds
Salacia arenicola, a climbing shrub from Republic of Congo

Kew Gardens scientists discover ingenious new 'gobstopper' fruit tree

The scientists also discovered a giant bean tree and one of the 'most irritating' plants in the world among 70 new species unearthed this year

Whale sharks can reach sizes of up to 18m in length and weigh more than 30 tonnes

Whale sharks to be tagged to save species

Technology will uncover the mating secrets of these enigmatic giants
Nick Marx leads the project at Angkor Wat

The Englishman returning wildlife to Cambodia's Angkor Wat temple complex

The 're-wilding' of the forests near the ancient site could be a model for other projects
Langdon Meadows, Essex. Bumblebees, butterflies, orchids,
bats and songbirds share these pastures. Plans for a 725-home development on the site near Basildon have been approved

Local wildlife sites not protected by statute are being ruined by development, warns report

A tenth of 'secret spaces' have been lost or damaged in the past five years

Northern white rhino dies at San Diego Zoo Safari Park to leave just five left in the world

Angalifu was one of the only two remaining males in the species of rhinoceros

Maligned
Hyenas in The Lion King (centre) and in reality (left, right)

A hyena for Christmas? You're having a laugh

They've had lousy PR but these animals can be adorable – and they need our protection
Polar bear Giovanna and her twin polar bears Nela and Nobby eat an ice cake with fresh fruit and cream to celebrate the cub's first birthday

Polar bear birthday party becomes traffic cone rave at Munich zoo

Nela and Nobby celebrated their first birthday yesterday

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Day In a Page

The difference between America and Israel? There isn’t one

The difference between America and Israel? There isn’t one

Netanyahu knows he can get away with anything in America, says Robert Fisk
Families clubbing together to build their own affordable accommodation

Do It Yourself approach to securing a new house

Community land trusts marking a new trend for taking the initiative away from developers
Head of WWF UK: We didn’t send Cameron to the Arctic to see green ideas freeze

David Nussbaum: We didn’t send Cameron to the Arctic to see green ideas freeze

The head of WWF UK remains sanguine despite the Government’s failure to live up to its pledges on the environment
Author Kazuo Ishiguro on being inspired by shoot-outs and samurai

Author Kazuo Ishiguro on being inspired by shoot-outs and samurai

Set in a mythologised 5th-century Britain, ‘The Buried Giant’ is a strange beast
With money, corruption and drugs, this monk fears Buddhism in Thailand is a ‘poisoned fruit’

Money, corruption and drugs

The monk who fears Buddhism in Thailand is a ‘poisoned fruit’
America's first slavery museum established at Django Unchained plantation - 150 years after slavery outlawed

150 years after it was outlawed...

... America's first slavery museum is established in Louisiana
Kelly Clarkson: How I snubbed Simon Cowell and become a Grammy-winning superstar

Kelly Clarkson: How I snubbed Simon Cowell and become a Grammy-winning superstar

The first 'American Idol' winner on how she manages to remain her own woman – Jane Austen fascination and all
Tony Oursler on exploring our uneasy relationship with technology with his new show

You won't believe your eyes

Tony Oursler's new show explores our uneasy relationship with technology. He's one of a growing number of artists with that preoccupation
Ian Herbert: Peter Moores must go. He should never have been brought back to fail again

Moores must go. He should never have been brought back to fail again

The England coach leaves players to find solutions - which makes you wonder where he adds value, says Ian Herbert
War with Isis: Fears that the looming battle for Mosul will unleash 'a million refugees'

The battle for Mosul will unleash 'a million refugees'

Aid agencies prepare for vast exodus following planned Iraqi offensive against the Isis-held city, reports Patrick Cockburn
Yvette Cooper: We can't lose the election. There's too much on the line

Yvette Cooper: We can't lose the election. There's too much on the line

The shadow Home Secretary on fighting radical Islam, protecting children, and why anyone in Labour who's thinking beyond May must 'sort themselves out'
A bad week for the Greens: Leader Natalie Bennett's 'car crash' radio interview is followed by Brighton council's failure to set a budget due to infighting

It's not easy being Green

After a bad week in which its leader had a public meltdown and its only city council couldn't agree on a budget vote, what next for the alternative party? It's over to Caroline Lucas to find out
Gorillas nearly missed: BBC producers didn't want to broadcast Sir David Attenborough's famed Rwandan encounter

Gorillas nearly missed

BBC producers didn't want to broadcast Sir David Attenborough's famed Rwandan encounter
Downton Abbey effect sees impoverished Italian nobles inspired to open their doors to paying guests for up to €650 a night

The Downton Abbey effect

Impoverished Italian nobles are opening their doors to paying guests, inspired by the TV drama
China's wild panda numbers have increased by 17% since 2003, new census reveals

China's wild panda numbers on the up

New census reveals 17% since 2003