“The more numerous we become, the more crowded, the more interconnected, the more demanding of resources, the more invasive of wild places, the more disruptive of richly diverse ecosystems—the closer we stand to the epidemic threshold for any new virus that probes us as a possible route to greater evolutionary success.” DiseaseIllnessCoronavirusPandemicEcologyEcosystemsVirusCovidEpidemic Of InsecuritySpillover Book:Breathless: The Scientific Race to Defeat a Deadly Virus Source: Breathless: The Scientific Race to Defeat a Deadly Virus