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It's a mixed bag of fortunes in this week's show - we look at the billions of dollars spent on the Apollo moon missions, and the smaller sums being spent on trying to save the world's rarest duck (it's the Madagascar Pochard if you're asking).

The One Planet team decamped to the Science Museum in London to record much of the show, and hung out with the satellites and other space artefacts there. Museum curator Doug Millard tells Mike why we can thank the Apollo programme for computers, while our space correspondent Richard Hollingham looks at hydrogen fuel cells - developed for the moon missions, and now being used to produce greener cars.

Also in the show we put some of your emails to a sun expert about whether solar activity is contributing to climate change, and we find out about that rare duck from Nigel Jarrett of the Wildfowl and Wetlands Trust, who speaks to us just before he flies out to Madagascar on a duck-saving mission. Click on the link below to see a slideshow of Nigel and some of his feathered friends.

If you want even more extra material, there's a link to Flickr where you can view more photos of Mike and the team at the Science Museum, and there's always our Facebook page. Tune in or download, have a listen and then join the debate. We're always pleased to hear from you, so email the team at oneplanet@bbc.com.