Petrichor is the earthy, musky scent that often accompanies the first rain after a long period of warm, dry weather. The term "petrichor" was coined in 1964 by two Australian researchers, Isabel Joy Bear and Richard G. Thomas, who discovered that the scent is caused by a combination of oils secreted by plants during dry periods and chemicals released by soil-dwelling bacteria when moistened by rain.
The scent of petrichor is often described as fresh, clean, and rejuvenating, and it has been shown to have a mood-lifting effect on many people. It is believed that humans may have evolved to appreciate the smell of petrichor as a way of detecting the presence of water, which is essential for survival.
Overall, the smell of petrichor is a reminder of the restorative power of nature and a symbol of hope for new beginnings.
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