Black hole stars, cookie-making microbes, and sound-powered drones: seven science stories you almost missed
A monthly science roundup highlights seven notable stories: the discovery of a ‘black hole star’ in the early universe, microbes transforming PET plastic into edible cookies, whale-call interference that mirrors relativistic physics, mosquito species showing distinct scent preferences, avocado trees with daily sex-switching flowers controlled by a single gene, tiny drones powered by sound with Helmholtz resonator cavities, and a heat-driven elastocaloric cooling system that could use waste heat or solar energy.