Science & Discovery News Today — October 17, 2026

Scientists continue to make groundbreaking discoveries that shed light on the intricacies of the natural world and the complexities of human society. Recent studies have revealed new insights into the biological processes underlying various phenomena, from the development of Alzheimer's disease to the coiling of snail shells. For instance, researchers have used optical imaging to link altered metabolism and oxygen use in Alzheimer's disease, a finding that could have significant implications for the diagnosis and treatment of this debilitating condition. Meanwhile, a study on snail shells has uncovered the mystery of how these shells coil to the right or to the left, highlighting the intricate mechanisms that govern the development of living organisms.

These discoveries are complemented by research into the social and behavioral sciences, which is helping us better understand the complexities of human behavior and decision-making. For example, a study on political violence has found that justifications for such actions can influence voter approval, highlighting the need for nuanced discussions about the impact of violence on society. Other research has shown that plants can shift gene activity within minutes of entering spaceflight, demonstrating the remarkable adaptability of living organisms to new environments. Additionally, scientists have made significant discoveries about the role of cell division in reshaping tissues, and the ways in which online concepts can spill into the real world, with implications for our understanding of social dynamics and behavior. Today's headlines showcase the diverse and interconnected nature of scientific inquiry, and highlight the many ways in which research is advancing our understanding of the world around us.

Today's signal:
• Optical imaging links altered metabolism and oxygen use in Alzheimer's disease (phys.org)
• Political violence: How justifications influence voter approval (phys.org)
• Scientists uncover mystery of how snail shells coil to the right or to the left (phys.org)
• Plants shift gene activity within minutes of entering spaceflight, experiment reveals (phys.org)
• Scientists discover cell division does more than make new cells: It helps reshape tissues (phys.org)
• Sexual violence concepts launched online are spilling into the real world (phys.org)