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Science News for November 14, 2014


Recommendation theory

The MIT researchers' model assumes that large groups of ratings can be clustered together and described probabilistically. They found that just five clusters were enough to account for most of the variation in a population, suggesting that collaborative filtering yields nearly optimal predictions.

Killing cancer by protecting normal cells

Researchers developed an anti-cancer drug that protects normal cells from radiation damage while sparing cancer cells. The compound, RTA 408, increases the effectiveness of radiation therapy in prostate cancer models and has potential applications for treating accidental radiation exposure.

SourceThomas Jefferson University·JournalMolecular Cancer Therapeutics·DateNov 14, 2014

Trends in plant biodiversity data online

The study using Google Analytics found that online plant databases are visited by users in over 100 countries, with mobile traffic growing steadily. This highlights the democratization of botanical information, equal access for researchers worldwide, and reduced wear on biodiversity objects.

SourcePensoft Publishers·JournalBiodiversity Data Journal·DateNov 14, 2014

HIV risks high in Mexico City's male sex trade

A new study reveals a stark assessment of the health dangers faced by male sex workers in Mexico City, with 38% having HIV and 21% having syphilis. The study highlights the need for incentives to promote condom use and improve individual and population health.

SourceBrown University·JournalJournal of the International AIDS Society·DateNov 14, 2014