The researchers studied 18 national political conventions between 1972 and 2004, and found no statistically significant impact on personal income or local employment when comparing host cities with control cities that didn't host events.

WSJ: Why Mega-Events May Not Mean Mega-Bucks

The research team, which also includes the university's department of chemistry and scientists at the University of the West of England, is growing each of the algae from the Roman Baths over a range of temperatures and comparing them to "control" algae known for being good for producing biodiesel at normal temperatures.

BBC: Bath's Roman Baths algae could fuel cars

"We don't have any specific research comparing SUVs with and without electronic stability control in winter-road conditions, " says Rader.

FORBES: Magazine Article

The simple way to search for such genes would be to gather thousands of patients with disease and scan through all ten million places where humans differ by a single DNA letter, comparing the results to thousands of healthy control patients.

FORBES: On The Cover/Top Stories

Both projects were rigorous randomized trials, comparing kids who got pre-K benefits with a control group that didn't.

WSJ: Review & Outlook: Head Start for All

After comparing the performance of a maquiladora-using firm with that of a control sample, the authors found no evidence of net gain in the use of a maquiladora.

ECONOMIST: A look at noteworthy articles from business journals