Renowned paleontologist Peter Ward argues that life might be its own worst enemy. He proposes a provocative vision of life’s relationship with the Earth’s biosphere in The Medea Hypothesis: Is Life on Earth Ultimately Self-Destructive? Ward’s proposes that all but one of the mass extinctions on Earth were caused by life itself, and reveals that there is an alarming decline of diversity and biomass on Earth, caused by life’s own "biocidal" tendencies.
