The LA Times reports on a study where researchers find that U.S. auto accidents increase on April 15, tax day. From the story:
I haven't read the study, so I can't comment on the methodology, but it's a provocative thought nonetheless.Deaths from traffic accidents rise 6% on tax day, that mid-April paroxysm of collective financial agony, according to a study published in Wednesday's edition of the Journal of the American Medical Assn.A pair of Canadian researchers tallied up U.S. tax day traffic fatalities for each year between 1980 and 2009, then compared the figures to those from two "control" days, exactly one week before and one week after. On average, they found, there were 226 deaths on tax day — 13 more than on non-tax days.The rise in e-filing — which would presumably keep procrastinators from speeding recklessly to the nearest post office — doesn't appear to have put a dent in the trend, said Dr. Donald Redelmeier of the University of Toronto's Institute of Health Policy, Management and Evaluation, who led the study.Perhaps that's because the heightened danger involves more than a deadline dash to a mailbox. Stress is a likely culprit, Redelmeier said: In general, most accidents are the result of human error, not mechanical failure, and stress has been shown to significantly worsen performance behind the wheel.
And The Second:
A new paper examines the growth of street networks. The authors highlight 'densification' and 'exploration' in network growth. Here is a nice article in Scientific American about the work. From SA:
It's very interesting work. If interested in similar research check out David Levinson's Nexus Group. Here is a link to a newly published paper from Levinson and Arthur Huang that examines network connectivity.