SCIENCE DAILY: ROOFTOP SOLAR ENERGY

Within the 128 cities studied, the researchers found that 83 percent of small buildings have a suitable location for PV installation, but only 26 percent of those buildings' total rooftop area is suitable for development. Because of the sheer number of this class of building across the country, however, small buildings actually provide the greatest combined technical potential.

Credit: © nd700 / Fotolia

TECH NEWS: INTEL BUYS 3D FIRM REPLAY FOR SPORTS TECH

Jack Gruber, USA TODAY

Intel chief executive Brian Krzanich delivering a keynote address at CES in Las Vegas as a biker does a stunt on stage. Intel's Curie sensors track height and speed, mapping the data in 3D.

TECH TODAY: GOOGLE AI BEATS WORLD GO CHAMPION IN FIRST OF FIVE MATCHES

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Media captionWATCH: The whole match in less than a minute

In a landmark battle between man and artificial intelligence (AI), the world champion of the game Go was narrowly defeated by his computer opponent.

MADONNA UNI: WHEN HIGH JUMP FAILS, FUNNY

HEALTH TIPS: HEALTH BENEFITS OF DOCOSAHEXAENOIC ACID(DHA)

Docosahexaenoic acid (DHA) is essential for the growth and functional development of the brain in infants. DHA is also required for maintenance of normal brain function in adults. The inclusion of plentiful DHA in the diet improves learning ability, whereas deficiencies of DHA are associated with deficits in learning.

HEALTH NEWS: FIGHTING CANCER BY PUTTING TUMOR CELLS ON A DIET

Foods that fit the ketogenic diet are high in fat and low in sugar.

Matailong Du/NPR

Cancer dogma holds that most malignancies are caused by DNA mutations inside the nuclei of cells, mutations that ultimately lead to runaway cellular proliferation. Given the countless genetic blips that have been associated with various cancers, the illness has actually come to be seen as a complex of diseases for which personalized treatments might offer the best chances of success.

SCIENCE DAILY: QUANTUM COMPUTER FACTORS NUMBER, COULD BE SCALED UP

Researchers have designed and built a quantum computer from five atoms in an ion trap. The computer uses laser pulses to carry out Shor's algorithm on each atom, to correctly factor the number 15.

Credit: Image Jose-Luis Olivares/MIT