Hi, Our June Issue is Here ☀️

This month: medicinal sunshine, refreezing the Arctic, and more! ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏  ͏ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­

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June 2025 Read the Issue Dear Friend of Scientific American, Just in time for summer, the cover story for Scientific American's June issue delves into the healing powers of sunshine. In it, Rowan Jacobsen meets a woman with the autoimmune disease multiple sclerosis who uses so-called phototherapy that involves a narrow band of UV light. The result has been miraculous, as the woman's debilitating brain fog and fatigue vanished. Find out how scientists are untangling the possible mechanism behind the link. Some geoengineers hope to turn down global temperatures by pulling water from under an Arctic ice cap and spraying it onto the surface where it freezes. Could the endeavor actually work? At the forefront of radio astronomy, exciting new telescopes could pull back the curtain on the very start of the universe, before there was light. Other features in this issue are also sure to enlighten you, including one about mitochondria. Surprisingly, these itty-bitty organelles are social beings that communicate with and help each other. Speaking of tiny, under certain conditions a new quantum state could emerge that would manifest in a quantum bubble. At a certain size, that bubble would balloon at the speed of light, ultimately making matter and any life impossible, writes physicist Matthew von Hippel. Humans, it turns out, are pretty hardy and adaptable. Journalist Kermit Pattison tells us about new research suggesting human genomes have continued to evolve in significant ways. The changes have allowed humans to continue dominating Earth, Pattison writes. I hope you get lost in some of these features.​ Try 90 days of digital access for just $1 to read the entire issue! Scientifically yours, Jeanna Bryner Acting Editor in Chief

Issue Highlights Can Sunlight Cure Disease? Sunshine may hold healing rays for a variety of autoimmune diseases such as multiple sclerosis. Scientists are turning this surprising discovery into treatments.  Read More Astronomers' Epic Quest to Witness the Cosmic Dawn A new generation of telescopes could peer back to the earliest epochs of the universe. Read More Inside the Bold Geoengineering Work to Refreeze the Arctic's Disappearing Ice Researchers are trying to rebuild sea ice above the Arctic Circle so it can reflect the sun's warming rays, slowing climate change. Read More Mitochondria Are More Than Powerhouses—They're the Motherboard of the Cell When these energy-giving organelles thrive, so do we. Read More Read the Issue Get 90 Days of SciAm for $1!

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