While JDate doesn't publicly release its algorithms, at the time of my experiment I observed that the more popular profiles come up higher in search results, allowing one to get a quick-and-dirty ranking of who's hot (or not).

WSJ: Hacking the Hyperlinked Heart

The Higgs boson is the only particle theorized by the standard model of physics that hasn't been conclusively observed in an experiment.

WSJ: New Data Boosts Case for Higgs Boson Find

Such brightening has been observed in the exhaust plumes of cargo ships for some time, but Lynn Russell, who ran the experiment, was still surprised by how much brightening the team saw.

ECONOMIST: Geoengineering