Researchers determined human speech is possible due to the larynx losing certain ribbon-like vocal membranes still found in other primates. In exchange, we lost the ability to be quite as loud. Previous studies have focused mostly on changes in the brain to understand how speech evolved.
Researchers created a bioengineered transplantable cornea from pig collagen protein. In a study, the implant restored vision to 20 people who were blind or visually impaired due to cornea damage. The scarcity of donated corneas is currently a major hurdle to such transplants.
Researchers found the tiny snailfish Liparis gibbus has the highest expression of antifreeze proteins — used to keep some animals’ blood from freezing — ever observed. Liparis gibbus is also the only biofluorescent polar fish ever found. Ice-dwelling fish are at high risk from increased competition as climate change drives more fish to polar regions.
Scientists discovered the origin of fear — or at least, the molecular pathway that tells the brain to be afraid. The molecule CGRP lets neurons in the thalamus and brainstem combine their signals to warn the amygdala of danger. Researchers say the finding could guide treatments for PTSD and hypersensitivity disorders.
Dolphins equipped with video cameras were observed catching and eating fish in the San Diego Bay. It’s the first time audio and video of dolphins hunting have been captured together, showing how dolphins combine movement and sound to locate and catch prey.