After previously being denied by former US President Obama in 2015, the Keystone XL Pipeline has been given the go ahead by current US President Donald Trump.
The project aims to transport crude oil/bitumen from Alberta to Texas to the Gulf Coast.
Emotions have flip flopped again. Those who opposed it on environmental grounds cheered in 2015. Now they're unhappy. Those in favour of it who sulked in 2015 now jump with giddy glee.
See? Everybody gets the chance to be happy sometime.