Scientific American
Letters to the editor from the January 2021 issue of
Scientific American
BIG OLD GALAXIES
Arianna S. Long s “Too Big for the Universe” describes ancient galaxy clusters that are surprisingly massive for their early age. Could this observation be related to how supermassive black holes in the centers of some galaxies have grown so big so quickly that their size is also difficult to explain?
K. CYRUS ROBINSON
Tampa, Fla.
While I was reading Long s article, I happened to be twirling a glass of iced tea and noticed that the bubbles on top had centered in a cluster that looked very much like the image of the Distant Red Core protocluster in the accompanying graphic. I wonder if there might be more of an influence from dark matter on the gases involved. What if the dark matter is also spinning while the gases are forming galaxy clusters?
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Scientists identify receptor in cells that could be key to preventing cancer drug-induced hearing loss
University of Alberta scientists have identified a receptor in cells that could be key to preventing permanent hearing loss in childhood cancer survivors who are being treated with the drug cisplatin. The researchers believe by inhibiting the receptor, they may be able to eliminate toxic side-effects from the drug that cause the hearing loss.
Cisplatin is an incredibly effective chemotherapeutic when it comes to treating solid tumors in children, contributing to an 80 per cent overall survival rate over five years, according to U of A researcher Amit Bhavsar, an assistant professor in the Department of Medical Microbiology & Immunology. The problem has always been with the side-effects. Nearly 100 per cent of patients who receive higher doses of cisplatin show some degree of permanent hearing loss. The ability to prevent this side-effect would dramatically improve the quality of l