MinuteEarth

Why Did T Rex Have Such Tiny Arms?

To learn more about this topic, start your googling with these keywords:

Evolutionary Mechanisms: Forces that change the frequency of genes in populations.

Natural Selection: The process whereby traits that make animals more likely to survive and reproduce take hold in a population.

Vestigiality: The process by which a genetically-determined structure loses some or all of its functionality.

Genetic Drift: A change in the frequency of an allele due to random sampling. 


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From the creators of the popular science show with millions of YouTube subscribers comes the MinuteEarth podcast. Every episode of the show dives deep into a science question you might not even know you had - but once you hear the answer, you’ll want to share it with everyone you know. Our team of scientists digs into the research and breaks it down into a short, entertaining explanation jam-packed with science facts and terrible puns. We’ll tell the incredible story of how monkeys crossed the Atlantic ocean on natural rafts, and we’ll explain why it gets hotter the deeper you dig underground.