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In 1665, Robert Hooke pressed a sliver of cork under his hand-ground microscope, saw tiny empty chambers that reminded him of monks' rooms, and named them cells in a folio so lavish that Samuel Pepys stayed up until two in the morning reading it

In January 1665, Robert Hooke pressed a sliver of cork under a microscope he had designed himself, saw a honeycomb of empty chambers that reminded him of monks' sleeping rooms, and gave them a name that biology has used ever since.

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Tracking the power of the sun.

Solar Daily is an independent publication covering solar energy, photovoltaic research, storage, clean technology, and the engineering driving the transition to renewable power. The site pairs a deep archive with current reporting on the research, companies, policy shifts, and technical breakthroughs shaping how solar power is produced, stored, and deployed. We employ modern AI technologies to support our editorial workflows; every published piece is editorially directed and reviewed.

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