Older male bonobos' poor eyesight is bad for their social life.
Findings came after scientists used sophisticated tracking software to follow 34 whales over months.
Clear skies will cause temperatures to dip, while fields might end up soggy after days of rain.
The cubs' stomachs still contain traces of what the researchers say could be mother's milk.
It is the first time that scientists find a two-headed shark embryo within an oviparous species.
The Arctic sea is bright with glowing zooplankton, helping them make it through the dark winter.
Winners include a scene of the Milky Way behind a natural stone arch, and a bolt of lightning hitting the Grand Canyon.
"If conservation is to regain the initiative it needs to both protect what's left, and restore what is lost."
IBTimes UK presents one last look at the amazing National Geographic Nature Photographer of the Year entries.
Poaching is not just an environmental problem - it has a high economic cost too.
'I didn't strangle the dog,' the peer said, after explaining a vet put the Alsatian down.
The snake has venom unlike that of any other snake.
Mild Autumn weather is contributing to the problem.
Planet Earth II coincides with free mobile app The Story of Life – the largest ever release of Attenborough's work for the BBC.
Removing predators from the ocean will vastly increase CO2 production.
The elderly ape first arrived at the zoo back in 1968.
Gene flows between bonobos and chimpanzees were identified over the course of their long history.
Palaeontologists have been using a method that turns their results into nonsense.
Where once the big cat covered Mesoamerica, their populations have becoming further cut off from each other.
The centre looks after 50 baby chimpanzees who were snatched from their families for the pet trade or orphaned when their mothers were killed for bushmeat.
Living Planet Report 2016 shows a dangerous decline of up to 81% of population of fresh water species.
Survey reveals aftermath of extreme underwater heatwave over 2015 and 2016.
Understanding the habits of young albatrosses will help conservation efforts.
A fossil shows that parrots like those alive today were in northern Asia millions of years ago.
The influx of warm ocean water beneath ice shelves in the Amundsen Sea has accelerated the loss of ice.
A species of fish has been found to make noises like a drum roll.
Scientists have found a way to work out the weather in the distant past by looking at animals' teeth.
The proposed sanctuary would stretch from South America to Africa.
The underground pocket of magma is still pushing the dome even higher today.
Overall winner is Matthew Cattell with his shot of starlings over Brighton's derelict West Pier.