Category: Discussion Topics

http://disasters.ferrellhistory.com/wp-content/uploads/2017/04/engineering-Wesnesday-April-26.pdf

Threats are defined and viewed from the perspective of their time periods. Those perspectives include such things as the level of scientific knowledge and the accepted role of government. http://disasters.ferrellhistory.com/wp-content/uploads/2017/04/threat-time-spectrum.pdf

http://disasters.ferrellhistory.com/wp-content/uploads/2017/04/bugs-Monday-April-17.pdf

http://disasters.ferrellhistory.com/wp-content/uploads/2017/04/Bugs-Friday-April-21.pdf

http://disasters.ferrellhistory.com/wp-content/uploads/2017/04/mining-dust-blight-Friday-April-14.pdf

http://disasters.ferrellhistory.com/wp-content/uploads/2017/04/mining-dust-bowl-chestnut-blight-Monday-April-10.pdf

http://disasters.ferrellhistory.com/wp-content/uploads/2017/04/hurricanes-etc-Friday-April-7.pdf

http://disasters.ferrellhistory.com/wp-content/uploads/2017/04/hurricanes-etc.-Monday-April-3.pdf

http://disasters.ferrellhistory.com/wp-content/uploads/2017/03/disease-Friday-March-31.pdf

http://disasters.ferrellhistory.com/wp-content/uploads/2017/03/explosions-Friday-March-24.pdf