The ecosystems of the land and ocean absorb around half our our planet warming emissions. But these are being destroyed by human activity. At the same time, climate change is a primary driver of the destruction of these habitats and biodiversity loss. If biodiversity is our strongest natural defence against climate change (as it’s been described), what’s stopping us from doing more to protect it? As the big global biodiversity conference (COP 15) gets underway in Montreal, Canada, presenters Sophie Eastaugh and Luke Jones are joined by: Victoria Gill, BBC Science Correspondent at COP 15 in Montreal Felipe Zapata, a Columbian botanist at UCLA Marcela Fernandez from Cumbres Blancas Akanksha Khatri, Head of Nature Action Agenda at the World Economic Forum Email us: theclimatequestion@bbc.com Producer: Georgia Coan Researcher: Frances Read Production Coordinators: Helena Warwick-Cross, Siobhan Reed, Sophie Hill Series Producer: Alex Lewis Editor: Richard Fenton-Smith Sound engineer: Tom Brignell