Invasion

The 'Invasion' episode of 'The Infinite Monkey Cage' podcast, hosted by Robin Ince and Brian Cox, delves into the complex topic of invasive species and their impact on ecosystems, economies, and human health. The episode features guests including poet and comedian Phil Jupitus, Professor of Ecology and Biodiversity Kate Jones, and forensic botanist Dr. Mark Spencer, who lend their expertise to the discussion. The conversation begins light-heartedly, with jokes about xenophobic gardeners and humorous invasions by plants like Japanese knotweed and Himalayan balsam. However, it quickly transitions to a serious examination of the consequences of species being introduced to non-native environments, often due to human actions.

The panel discusses various examples of invasive species, from the seemingly innocuous garden strawberry to the destructive floating pennywort and the aggressive grey squirrel, which has contributed to the decline of native red squirrels through the spread of squirrel pox. The economic costs of managing invasive species, such as the impact on waterways and infrastructure, are highlighted, with a conservative estimate of £1.6 billion annually for the UK alone. The episode also touches on the role of climate change in exacerbating the issue, creating new challenges for ecosystems already under stress from invasive species.

A significant portion of the discussion is dedicated to zoonotic diseases—those that jump from animals to humans—such as Ebola and Lassa virus. The panelists explore how human activities, like deforestation and bushmeat consumption, increase contact with wild animals and the pathogens they carry, leading to outbreaks of diseases that humans are ill-equipped to handle. The conversation underscores the unpredictability of invasive species and diseases, emphasizing the difficulty in managing their spread and the unforeseen consequences of interventions, such as biocontrol or genetic modification.

The episode concludes with a broader reflection on humanity's role as the ultimate invasive species, having colonized nearly every corner of the planet and often disrupting native habitats and species in the process. The panelists ponder the ethical and practical implications of attempting to control invasive species, weighing the benefits against potential risks to ecosystems and biodiversity.