Life on this earth

The origin of life on earth: leading scientific theories explained simply

How has life on earth evolved over 4 billion years? a timeline of key milestones

Extreme life on earth: organisms that thrive in the harshest conditions

The search for extraterrestrial life: what life on earth tells us about alien possibilities

Human impact on life on earth: how we’re altering ecosystems and biodiversity

The sixth mass extinction: how life on earth is changing forever