This Week in Science: Jellyfish attack, lab-grown mini-brains sense time, and much more! First up: An analysis of 500 occupations revealed the job with the highest risk of radiation-related cancer deaths, and it's probably not one you'd expect. It turns out it's flight attendants, followed by pilots. The prime suspect is a strange one.Also this week:
Astronomers find an absolute super star in our galaxy
The health hazards of a daily sugary drink habit
Swarms of jellyfish shut down a nuclear reactor in a stunning coincidence
Lab-grown mini-brains learn to tell the time
