I believe your answer is the year 2020
The CN tower is the tallest freestanding structure in the Western Hemisphere.
Answer:
It is possible.
Explanation:
There is still enough air-pressure inside Mark Watney's suit even though it was compromised because of the presence of huge amount of air in the suit of Mark Watney. When he tear his suit in order to move upward to reach his crew member, the suit lost some amount of air but not all the air is lost so we can say that there is still enough air pressure present inside Mark Watney's suit.
I do believe that the answer is Finland.
