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Niall McCann talks to Phillip Lymbery, Global Chief Executive of Compassion in World Farming, the organisation which aims to end all factory farming processes.
Up Next in Science: Ages 14-16
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Andrew Millison's How to Fix a Broken...
Permaculture instructor Andrew Millison explains the process for repairing a degraded ecosystem. We begin with the metrics for assessing ecosystem health, and then go over the steps to triggering biological activity and ecological succession.