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The Great Unconformity as a Springboard for the Cambrian Era
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Mapping Out the Brain: PET Scans and the Structure of the Brain
Throughout history, brain function has been a hotly contested subject — Aristotle theorized that it regulates heart temperature, while ancient Egyptians considered it a useless organ. Luckily, modern scanning technology has allowed researchers to resolve some of these century-old debates by precisely mapping out portions of the brain.