Environment

Scientists say a group living in the Araguaia River, Brazil has been isolated from other varieties for more than two million years

Trainer dies after attack by killer whale

A female trainer was attacked and killed by a killer whale in front of dozens of horrified tourists yesterday. Eyewitness reports suggested the orca, which has been involved in two previous deaths, rose up to grab Dawn Brancheau by the waist and shook her violently before dragging her under water.

Dolphins may hold the key to a cure for type II diabetes

They are warm blooded, social and highly intelligent animals, and just like humans their brain is much bigger than expected for their size. But dolphins also share something else with man – they suffer a diabetes-like state not seen in any other wild animal.

Tesco staff to share £144m savings scheme payout

Workers from supermarket giant Tesco are sharing a record £144 million payout after one of the group's savings schemes matured, it was announced today.

China's bridge of size

It's 30 miles long, will cost £6.6bn to build, can handle earthquakes of magnitude 8.0, and withstand the impact of a 300,000-tonne vessel

DVD: The Cove (12)

Rick O'Barry surfed a wave of success on the dorsal fins of the globally syndicated TV series Flipper.

Mary Wakefield: Those clever animals deserve better treatment from us humans

Did you see Betsy the border collie on TV on Wednesday night?

DVD: The Cove, For retail & rental (Vertigo)

One-time Flipper trainer Ric O'Barry is keen to make amends to the dolphin community.

You'll have a whale of a time looking for oceanic entertainment in the water around the Canaries

When the captain of a whale and dolphin-watching boat based in Tenerife promises a sighting on every outing, it's tempting to raise an eyebrow. How can they be so sure?

Revealed: the albatross's unlikely dinner date

Images from camera mounted on bird's back show giants of the skies hunting for food in concert with killer whales

Wildlife films: Flights of fancy

Feature-length wildlife films are taking off on the big screen, but this soaring success isn't a result of the usual formula of pretty pictures and earnest commentary. The secret is storytelling, says James Mottram

Captured on film: dolphin bloodbath Japan tries to hide

Documentary team – including the man who trained Flipper – aims to stop the annual slaughter

The Complete Guide To: Whale & dolphin watching

As a week devoted to these marvellous marine mammals begins, Harriet O'Brien explores the best places to encounter them in the wild

Navy exercises blamed over dead dolphins

Naval exercises could have contributed to the mass stranding of 26 dolphins on the Cornish coast a year ago, a scientific report found today.

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The architect of the HeForShe movement and head of UN Women on the world's failure to combat domestic violence