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University of Southern California


Where there's wildfire smoke, there's toxicity

A new study analyzing particulate matter from Southern California wildfires confirms that the composition of smoke posed more serious potential threats to health than is generally realized. The study found that fire emissions produce a significantly larger aerosol in size, making it easier for particles to penetrate indoor structures.

SourceUniversity of Southern California·JournalEnvironmental Science & Technology·DateNov 20, 2008

USC: gamers play against type

A USC survey of 7,000 EverQuest II players found that older players were more typical, with playing time increasing with age. Women logged more hours in the game and were less likely to quit, while also exercising regularly. The study suggests that online gaming may not compromise mental health, contrary to stereotypes.

SourceUniversity of Southern California·JournalJournal of Computer-Mediated Communication·DateSep 24, 2008

Catalyst mystery unlocked

A team of researchers has developed a computational model that challenges entrenched ideas about enzyme catalysis, proposing a method for designing custom-designed enzymes. The 'lock and key' model is replaced by an electrical attraction theory, suggesting a perfect physical fit between catalyst and substrate is not necessary.

SourceUniversity of Southern California·JournalProceedings of the National Academy of Sciences·DateAug 18, 2008

Mutant testis cells behind genetic disorder have survival advantage

A new study found that mutant testis cells carrying the Apert's syndrome mutation have a selective advantage over non-mutant cells, leading to an exponential increase in sperm from older men containing the mutation. This explains why children born from sperm of older fathers are more likely to inherit genetic disorders.

SourceUniversity of Southern California·JournalProceedings of the National Academy of Sciences·DateJul 14, 2008

What makes life go at the tropics?

A recent PNAS study reveals that temperature drives biodiversity in tropical regions, contradicting previous assumptions that light was the key factor. The study found that bacterial samples from warm waters contained many species, suggesting that photosynthesis has little influence on diversity.

SourceUniversity of Southern California·JournalProceedings of the National Academy of Sciences·DateMay 27, 2008