Christiaan Eijkman's chickens developed which deficiency disease after being fed polished rice, a discovery that helped establish the concept of vitamins?

Science & Nature

In what year was Christiaan Eijkman awarded the Nobel Prize in Physiology or Medicine for his discovery relating to vitamins?

Christiaan Eijkman discovered vitamins by accidentally observing chickens fed polished rice developed beriberi, revealing nutritional deficiency disease.

Science & Nature

Why did Rosalind Franklin never receive a Nobel Prize for her role in uncovering DNA's structure, despite her critical X-ray data?

Franklin died of ovarian cancer at 37, four years before the Nobel Prize was awarded; the prize cannot be awarded posthumously, so she never received recognition.

Science & Nature

During which conflict did Rita Levi-Montalcini secretly conduct the chicken embryo research that led to her Nobel Prize discovery?

Rita Levi-Montalcini discovered nerve growth factor while hiding from Nazis in a Italian farmhouse, conducting experiments with chicken embryos.

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Which planet in our solar system takes longer to complete one rotation than it does to orbit the Sun?

Venus rotates backward compared to most planets and so slowly that one Venusian day is longer than its year around the Sun.

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What term describes the biological phenomenon where axolotls retain juvenile physical features throughout their adult lives?

Axolotls permanently retain juvenile features into adulthood, a phenomenon called neoteny. They rarely metamorphose unless forced by stress or low water levels.

Science & Nature

Why are strawberries not classified as berries in botany?

Bananas are berries, but strawberries aren't. Botanically, berries develop from a flower's single ovary; strawberries develop from multiple ovaries instead.