This week in the Planet Earth Podcast: how knowing exactly which bees pollinate which crops may help us grow food more sustainably; and a look at the effects of tiny particles called nanomaterials on the environment and our health.

• Bees, nanomaterials, and methane on Mars - Naked Scientists Science Podcasts and Science Radio Shows
• Attracting Bees with Wild Flowers - Planet Earth Online - Interviews
• The Plight of the Bumblebee - Features
• Why's Graphene Great? - Podcasts
• Power to the Pollinators - Planet Earth Online - Interviews
• The Plight of the Bumblebees - Interviews