What he conveys clearly to readers adds to a growing array of dire global scenarios, wherein mankind must somehow learn to live with huge spikes in the frequency of forest fires and, among other things, higher sea levels because of the unrelenting release of carbon into the atmosphere.In his reporting, Fox isn’t motivated solely by a general anxiety about where the planet is headed. His very young daughter Grey, whom he anticipates growing up to have her own family sometime around 2060, will face a world of frightening change.

Even so, there’s some evidence that light therapy may have a similar effect on the brain to many antidepressants. In a study published in 2016, 11 patients with SAD treated with two weeks of light therapy saw plunging levels of serotonin transporter binding – a measure of how quickly serotonin’s activity is curtailed. Their levels became similar to those seen during summertime. There is other evidence, besides. At the back of our eyes, an unusual type of photoreceptor has been found that seems to help synchronize our circadian rhythms to the 24-hour cycle of light and dark.