magnetic fields
-
In Ancient Rocks, Scientists See a Climate Cycle Working Across Deep Time
A gradual shift in Earth’s orbit that repeats every 405,000 years plays a role in natural climate swings.
-
When North Itself Wanders
I love thinking about why my compass points north. The deep, molten-metal motions, rising And falling … gargantuan currents of iron Conceiving vast magnetic fields, revealed In my hand, by a tiny, quivering red needle.
-
Solar Heartbeat
Upon our little spinning rock, Cosmic rays and debris knock. Through great fields and waves we race, Not empty, our broad path through space!
