Emotions. help me correct this essay please.

The emotions we carry within ourselves are a rich source of philosophical debate and have been for decades. Scientists have hypothesised, tried to analyse, and attempted to explain 'emotion' but in the scientific discipline answers to abstract questions often remain elusive. Darwin, whose claim to fame is the theory of evolution, proposed that emotion might be genetically hardwired and innate, and this idea gained some traction with his contemporaries. Others hold that emotions are socially constructed, that they are something that grows with us inspired wholly by our environment and the people who surround us. These are things which we can, to some extent, control and exercise choice over, and thus proponents of this line of thought believe we can in some ways self-determine our emotions and personality.

As evidence that emotions are not entirely products of our environment and culture, scientists have presented research showing identical facial expressions, and similar vocalisations at the root of the five 'core' emotions, regardless of the geographic region and culture of any person. However, 'emotion' continues to befuddle modern scientists to this day who cannot even explain what an emotion physically is. Perhaps because emotion is not a physical thing at all? If so, it may stay as an unknown.