Aerobic exercise relieves insomnia

CHICAGO — The millions of middle-aged and older adults who suffer from insomnia have a new drug-free prescription for a more restful night’s sleep. Regular aerobic exercise improves the quality of sleep, mood and vitality, according to a small but…

Edges of magnetic tape key to boosting data density

engineers have examined in unprecedented detail a key manufacturing step that could improve one of the worlds most popular data storage materials: magnetic tape. How a tape is cut in the factory plays a major role in how much data it can hold — and whether the $6 billion American magnetic tape industry will be able to maintain its market share in the future, according to the comprehensive study.<