Watch on TV and online as Kate Humble, Simon King, Chris Packham and the team track the natural glories of the autumn.
This exploration of how and why humans can speak includes an experiment that shows how a new alien language can emerge in just one afternoon.
Watch stunning clips of your favourite animals from past BBC Natural History programmes. Highlights include:
Regular updates from the BBC Natural History unit on nature and the environment. Here are some of the latest stories:
Internet technology has transformed our lives - and the BBC wants your input for a documentary marking the web's 20th birthday.
Get to know yourself by taking our personality test. Or see if you can spot a fake smile.