Replenishing Natural Iron-Rich Dust Will Revive Photosynthesis, Feed Humanity, and Cool the Planet
Russ George
MARCH 1, 2025
In the late 1980s, oceanographer John Martin quipped, Give me half a tanker of iron, and Ill give you an ice age. Martin’s meticulous 20 years of research showed that iron, scarce in vast ocean regions, could trigger phytoplankton bloomstiny plants that power photosynthesis, sustain marine life, and draw down carbon dioxide (CO2) to regulate Earths climate.
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