Thursday, February 24, 2005 A paste containing synthetic tooth enamel can seal small cavities without drilling. Kazue Yamagishi and colleagues at the FAP Dental Institute in Tokyo say that the paste can repair small cavities in 15 minutes. Currently, fillers don’t stick to such small cavities so dentists must drill bigger holes. Hydroxyapatite crystals, of […]
Day: March 15, 2023
Manitoba volunteers go to war against Red River floodingManitoba volunteers go to war against Red River flooding
Monday, April 6, 2009 A satellite image of the Red River of the North flooding. Over 1,600 volunteers registered to help build approximately 65,000 of the 500,000 sandbags to create dikes 20.5 feet (6 metres) high to protect the City of Winnipeg, Manitoba in the war against the Red River of the North flood. 700 volunteers answered […]