The Canadian dollar (symbol : $ ; code: CAD) is the currency of Canada. It is abbreviated with the dollar sign $ , or sometimes C$ to distinguish it from other dollar-denominated currencies. It is divided into 100 cents.
Mystery of how sperm whales hold their breath for 90 minutes solved as scientists discover the key is unique protein in their blood.
Biologists have unravelled why deep diving mammals such as sperm whales can hold their breath for over an hour when diving for food â they have electrically charged proteins in their blood. Sperm whales make some of the longest dives achieved by mammals, with some lasting up to 90 minutes Photo: AP.