r006_0019_0164_DredgingTheSchuylkillCa1940s "Dredging the Schuylkill," depicts aspects of the Schuylkill River Project, assembling the dredge, dredging operations "Dredging the Schuylkill, is a record of the Schuylkill River Project authorized by the Department of Forests and Waters, and the Water and Power Resources Board of the Commonwealth of Pennsylvania, by the American Steel Dredge Company, Inc." This is a 31-minute, silent film in color with intertitle cards that explain the construction of the dredges from start to finish
Starting to Visualize the Health Effects of Cigarette Factories What we know about the current health effects of tobacco products
The main finding was that participants who used e-cigarettes reported respiratory symptoms including wheezing in the chest, difficulty breathing during exercise, and coughing at night
If you are on a budget but want better image quality and dont mind a battery: The 70mai A810 is relatively cheap, compact, and offers image quality that essentially matches that of our top pick (it uses the same image sensor)