Experts say rollercoasters are extremely safe, despite the fatal incident at a Six Flags park in Georgia.
Also: The Vatican reveals Pope Leo has lung cancer, after he has surgery to remove a growth.
And: A 30-year-old cold case murder trial in P.E.I. has fallen apart. The crown says Charlottetown police lost key evidence.
Plus: Advance polls are open for Alberta's referendum on whether to vote on sovereignty for the province, the man convicted of killing rapper Tupac Shakur is sentenced, and a new way of seeing your favourite musician — via hologram.
