New research highlights Mexico's pivotal role in ancient mammal migration between North and South America. Prior to the Isthmus of Panama forming, Mexico served as a 'holding pen,' allowing northern species to adapt and diversify before entering South America.
A 100-million-year-old amber fossil reveals a fungus-infected ant pupa, suggesting zombie fungi have been contaminating ants for twice as long as previously thought. Fungus infected insects.
Bivalves faced mass extinction, losing species but retaining diverse ecological roles. Post-extinction recovery saw unexpected shifts, with new species dominating. Human impact threatens future biodiversity, mirroring past upheavals.
