One of the most popular explanations for why people suffer seasonal winter depression is the lack of sunlight. (creativeboom.com)
Nevertheless, the most popular explanation for this fact is that when a baby is teething he or she tends to pick up random things and put them in the mouth. (newkidscenter.com)
Among the most popular explanations for the immigrant advantage is that such individuals might be unusually resilient, both mentally and physically. (scientificamerican.com)