A massive forest fire has been raging in Alberta, Canada, for nearly a month. Scientists say warmer, drier weather has increased the frequency and intensity of fires. For this month's Environmental Outlook: wildfires, climate change and threats to North America’s forests.
Of all our senses, the sense of smell is most closely tied to mental health and happiness. It was the first of our senses to evolve, yet it often takes a cultural backseat to sight and sound. An expert on smell talks about the psychology, biology and sociology of our olfactory sense.
- Rachel Herz visiting professor at the Department of Psychology at Brown University.
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