Warning: This episode contains the unusual mating habits of spiders. Autumn is the time for spiders, and the colder months mean our eight-legged friends are searching for something vital: sex. Join arachnologist Anna Maka and author and broadcaster Lucy Cooke to uncover the fascinating and freaky sex lives of spiders and what it teaches us about evolution itself.

Come on outside! A Life More Wild is a series of wild walks with fascinating people, transporting you to the great outdoors and helping you connect with nature as you hear how they've woven the natural world into lives. In Series 4 join adventurer Alastair Humphreys as he teaches you how to build adventure into your life wherever you are, learn what ‘London dolphins’ are with urban birdwatcher Lira Valencia, and discover what it takes to climb Mont Blanc wearing 19th Century clothing with Lise Wortley.

Are you concerned about the Earth's future? Are you interested in what is being done in Northern California and the world to address environmental issues? Do you want to act? Then tune in every other Sunday to "Sustainability Now!" on KSQD.org to hear interviews with scientists, scholars, activists and officials involved in the pursuit of sustainability. Sustainability Now! is underwritten by the Sustainable Systems Research Foundation in Santa Cruz, California