Researchers found that reading on a tablet decreased feelings of sleepiness, shortened REM sleep and suppressed the production of melatonin in participants before bedtime.
The service, which will offer 600,000 titles and thousands of audiobooks for a monthly fee of $9.99, takes aim at book subscription forerunners Oyster and Scribd.
Amazon is reportedly seeking to enter the brick-and-mortar retail realm by repurposing its famed Kindles into a checkout system for smaller businesses.
