This month's email is a reply from Andrea Adkins, Washington County Public Library. The thing that catches one's eye is Andrea's ability to use the most basic of information ("earthwuake that changed the path of Mississippe river") to find the name of the event as well as several authoritative resources to answer the question.

The patron's request for "lots of info" must be balanced with providing too much info. Andrea has struck a balance, provided basic answers on both, and the patron is always free to request more information after he or she has looked at the resources provided.

-- Original Message from Patron --

was there an earthwuake that changed the path of Mississippe river and also another question- why is it that after you look at light for so long that you see colored dots(i need lots of info on both of these:)

-- Reply from Andrea --

Hello,

This email is in response to your recent question to KnowItNow24x7, Ohio's statewide online reference service.

Here are some links to information about the New Madrid earthquake of 1812.

http://earthquake.usgs.gov/earthquakes/states/events/1811-1812.php

http://adsabs.harvard.edu/full/1996AREPS..24..339J

http://hsv.com/genlintr/newmadrd/index.htm

For the question about seeing spots after looking at a bright light.

http://www.uic.edu/com/eye/LearningAboutVision/EyeFacts/FYIAboutEyes.shtml

I hope this information helps answer your question. Thank you for using KnowItNow24x7.