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Wacky WorldScience
Astronomers saw its spectral line during an 1868 solar eclipse observed from India, before it was isolated on Earth in 1895.
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Wacky WorldScience
Astronomers saw its spectral line during an 1868 solar eclipse observed from India, before it was isolated on Earth in 1895.
Bones are stronger than steel of the same weight.
Weight for weight, bone is remarkably strong, especially under compression, because of its mix of collagen and mineral.