Scientists claim that previous observations of altruistic behaviour in primates resulted from flawed study designs.
Shark was filmed with remote operating vehicle off during dives off coast of California in 2009.
A snake with an iridescent head – likened to Ziggy Stardust – is among one of many newly discovered species.
Killer whales and Greenland sharks could attack polar bears as well as eat their prey - seals.
Many animals and plants in nature have strange and scary appearances.
"Superdeep" diamonds form as far as 750km down into the Earth – that's more than the length of Florida.
About 80% of the world's volcanic activity happens underwater - now scientists have caught an eruption in the act.
Six new species discovered in vent chimneys 2.8km deep in the south-west Indian Ocean.
Evolutionary biologists also reveal why they have no teeth or pelvic fin.
The loss of the supercontinent Pangea has been making the Earth cool quicker and form thinner crust.
Scientists look at how polygamous and seasonal breeding systems lead to a longer baculum.
Gigantic waves often occur in North Atlantic due to underwater plateaus and freak wind patterns.
The Marinoan glaciation lasted for millions of years and covered the Earth in ice from pole to pole.
Wisdom's latest egg is expected to hatch around February 2017.
Trophy hunting and retaliatory killings are threatening wild lion populations.
The spider was found in a forest in India and researchers were struck by how much it looked like the Sorting Hat.
A monkey voice simulation says: 'Will you marry me?'
Final episode of series will focus on cities and how animals adapt to these artificial habitats.
John Wiens was asked about the president elect after publishing a study on imminent animal extinction.
Nearby islands had been warned of potential tsunami danger after quake in Pacific.
Scientists have calculated that smallest area of habitat required for panda survival is 114.7sq km.
Karta, 34, has lost six infants since 1995 as a result of complications relating to her anatomy.
Leatherback turtles were all thought to be nomadic, but some of them have settled in the Mozambique Channel.
A new report has found that well-managed and transparent trophy hunting could help conservation.
Wolves spotted in Paris commuter belt as packs spread across France.
An 'explosion' of evolutionary diversity occurred when four-legged animals took their first steps on land.
Biological control has failed in the past, but conservationists believe the 2mm wasp will work.
The iconic sea creature feeds on plankton well beneath the surface, isotope analysis shows.
There are about 3,000 monkeys in the centre of Lopburi, and they regularly terrorise tourists and locals.
This year marks the 28th anniversary of the celebration but is the first since King Bhumibol Adulyadej's death.