Full Coverage
Earth’s protective sky is at least 3.7 billion years old
By Miguel Angel Criado
All coverage
Earth's magnetic field formed before the planet's core, study suggests
By Stephanie Pappas
3.7 Billion Years Ago, the Earth's Magnetic Field Played A Vital Role in the Evolution of Life
By Mj Banias
Look! 3.7 Billion-Year-Old Rocks Reveal The Oldest Evidence of Earth's Magnetic Field
By Doris Elin Urrutia
Scientists uncover 3.7-billion-year-old record of Earth's magnetic field
By Mrigakshi Dixit
Oldest undisputed evidence of Earth's magnetic field
By Imma Perfetto
Earth's Magnetic Field Is Almost Similar to What it Was Like 3.7 Billion Years Ago
By Elizabeth Gamillo