![Scientific American Magazine Vol 325 Issue 2](jpg/44026498-61ee-4994-a59cac3083f64bf7_sourcec6eb.jpg)
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Features
Stuttering Stems from Problems in Brain Wiring, Not Personalities
Poor neural connections among areas that control movement and speech may be responsible and could be driven by genes
The Physics and Hype of Hypersonic Weapons
These novel missiles cannot live up to the grand promises made on their behalf, aerodynamics shows
Immune Cells Suggest New Alzheimer's Treatment Possibilities
Brain cells called microglia have different effects as the neurodegenerative disease progresses
Brown Dwarfs Could Reveal Secrets of Planet and Star Formation
They’re not quite stars and not quite planets but can help us understand both
Play Is Serious Business for Elephants
Young dogs, apes and other animals develop skills needed to survive and reproduce
The Forgotten History of the World's First Trans Clinic
The Institute for Sexual Research in Berlin would be a century old if it hadn’t fallen victim to Nazi ideology
How Quantum Computing Could Remake Chemistry
It will bring molecular modeling to a new level of accuracy, reducing researchers’ reliance on serendipity
Flu Has Disappeared for More Than a Year
Mask wearing, social distancing and other steps to stop COVID-19 have also curtailed influenza