Create a list of the ten most impotant invention or innovationof the last 150 years. You may complete this chart or create a PowerPoint or present this on a poster board for extra credit. You will be able to find information on invention at this site http://www.enchantedlearning.com/inventors/indexa.shtml. Investigate the time era of 1850-today. On the extra credit portion, please include a picture of each invention.