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The minerals that power the clean energy transition — lithium, cobalt, nickel, copper — are not running out. But the easy deposits are gone. The next generation of resources lies deeper, in more complex geology, in regions where conventional exploration methods reach their limits. Airborne magnetic surveys have long been a standard tool in geophysical exploration. Magnetometers carried by aircraft can map subsurface structures across large areas quickly and cost-effectively.

The human body generates magnetic fields. The heart, the brain, and the peripheral nervous system all produce electrical activity — and every electrical current generates a corresponding magnetic field. These biomagnetic signals carry clinical information of extraordinary richness. The magnetic field of the heart encodes cardiac function in a way that complements and in some respects surpasses the electrocardiogram. The magnetic field of the brain, mapped in detail, reveals n