Taking a break from Fort McMurray coverage, an Alberta couple is celebrating the birth of their four identical bundles of joy. Read more: www.cbc.ca/1.3574146 | CBC Edmonton

The Athabasca Oil Sands in Alberta, Canada now cover roughly 100 square miles (258 square kilometers). The facility has expanded as its production of oil increased since the 1990s - an average of 3.1 million barrels were extracted each day in 2018, which is four times as much as in 2005. Athabasca contains Earth’s largest known deposit of bitumen, a semi-solid form of crude oil that occurs as a mixture of sand, clay, and water. The additional energy required to mine and then remove the sand from