This week in the Planet Earth Podcast: sex and the survival of honey bee colonies; why rivers are still recovering from the legacy of acid rain; and collecting coral from the Atlantic seabed.

• Bees and sex, acid rain's legacy, cold water corals - Naked Scientists Science Podcasts and Science Radio Shows
• Acid Rain's Legacy - Planet Earth Online - Interviews
• Low Energy, High-Power Processing - Podcasts
• Creatures in Colonies - Podcasts
• Wet But Not Wild - Farming Fish - Podcasts
• Supercomputers & Super Computing - Podcasts