A family of saddleback clownfish have found an excellent home, however, they need a place to lay their eggs.
Amphiprion polymnus, also known as the saddleback clownfish or yellowfin anemonefish, is a black and white species of anemonefish with a distinctive saddle. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone.
The cross-discipline effort to work our how ancient humans learned to count.
In this episode:
00:45 Number origins
Around the world, archaeologists, linguists and a host of other researchers are trying to answer some big questions – when, and how, did humans learn to count? We speak to some of the scientists at the forefront of this effort.
We discuss some highlights from the Nature Briefing. This time, an upper limit for human ageing, and could tardigrades survive a collision with the moon?