Mysteries of time still stump scientists
New book explores perception, biological clocks
![illustration of brain clock](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/02/020217_LS_time-flies_main_free.jpg?fit=860%2C460&ssl=1)
EXPLORATION OF TIME Time runs through the body and brain in enigmatic ways. A journalist examines these temporal puzzles in Why Time Flies.
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