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The need for shut-eye is universal. Justin Lewis/Stone via Getty Images

How much sleep do you really need?

Getting a good night's sleep on a regular basis can help you do well in school or at work. It might even make you better-looking.
A simple two-dimensional grid can convey a lot of information – whether making pictures with Lite-Brite or storing data in DNA. Justin Day/Flickr

DNA ‘Lite-Brite’ is a promising way to archive data for decades or longer

DNA has been storing vast amounts of biological information for billions of years. Researchers are working to harness DNA for archiving data. A new method uses light to simplify the process.
Chronic absenteeism rates fell 8 percentage points among schools in Nevada and Colorado that adopted the ‘Breakfast after the Bell’ program. Jessica Rinaldi/The Boston Globe via Getty Images

Breakfast After the Bell programs reduce school absenteeism

Chronic absenteeism is a pressing issue in high-poverty schools, but research suggests that serving students breakfast during class can help keep kids in school.
Tyrannosaurus rex spanned all of ancient North America, and about 20,000 lived at once. Roger Harris/Science Photo Library vie Getty Images

How many Tyrannosaurus rex walked the Earth?

Using the incredible wealth of fossil data and a modern ecological theory, researchers estimated population density for the extinct apex predator.
Nikki Luman works part-time for a public library in Sycamore, Ohio. AP Photo/Tony Dejak

143,518 US public library workers are keeping their communities informed, connected and engaged – but their jobs may be at risk

During economic downturns, local governments tend to cut spending on libraries, even as the need for their services grows.
The colors in this microscope photo of a fruit fly brain show different types of neurons and the cells that surround them in the brain. Sarah DeGenova Ackerman

Astrocyte cells in the fruit fly brain are an on-off switch that controls when neurons can change and grow

Adaptable neurons are tied to learning and memory but also to neurological disorders. By studying fruit flies, researchers found a mechanism that controls neuroplasticity.

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