variation

Raising 2,000 generations of bacteria may have solved this great debate in biology

Raising 2,000 generations of bacteria may have solved this great debate in biology

Since the dawn of genetics in the early 20th century, biologists have debated if evolution is more driven by random mutations or by the original diversity in the gene pool. Having many genetic alternatives to choose from can make natural selection much faster in the beginning, but do the genetic mutations that occur over time …

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Earth Core Structure

New research shows that the earth’s inner core oscillates – causing variation in the length of a day

Scientists have discovered evidence that the Earth’s inner core oscillates, which contradicts previous notions that it consistently rotates at a faster rate than the planet’s surface. Researchers identify a six-year cycle of super- and sub-rotation that affected the length of a day based on their analysis of seismic data. The structure of the earth is …

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