theory of free radical ageing debunked some more

Worms that were genetically modified by McGill University researchers not only survived exposure to a banned poison, they lived even longer than normal worms, challenging scientists’ understanding of the aging process.

Dr. Siegfried Hekimi and his student Dr. Wen Yang, who are in the Montreal university’s biology department, planned to test the so-called “free radical theory of aging” by genetically modifying wild worms in a lab to accelerate production of free radicals — toxic molecules generated as a byproduct of oxygen use.

Which basically means that using anti-oxidants probably won’t help you at all, when it comes to beating ageing.

via CBC News – Technology & Science – Mutant worms defy aging theory.

Facebook: Why our ‘next-gen’ comms ditched MySQL

About a year ago, when Facebook set out to build its email-meets-chat-meets-everything-else messaging system, the company knew its infrastructure couldn’t run the thing. “[The Facebook infrastructure] wasn’t really ready to handle a bunch of different forms of messaging and have it happen in real time,” says Joel Seligstein, a Facebook engineer who worked on the project. So Seligstein and crew mocked up a multifaceted messaging prototype, tossed it onto various distributed storage platforms, and ran a Big Data bake off.

The winner was HBase, the open source distributed database modeled after Google’s proprietary BigTable platform. Facebook was already using MySQL for message storage, the open source Cassandra platform for inbox search, and the proprietary Haystack platform for storing photos. But in the company’s mind, HBase was better equipped to handle a new-age messaging system that would seek to seamlessly juggle email, chat, and SMS as well as traditional on-site Facebook messages.

via Facebook: Why our ‘next-gen’ comms ditched MySQL • The Register.