Subhead:A senior Natural Resources Canada scientist has been charged with breach of trust and unauthorized use of federal computers after allegedly copying thousands of files on the eve of his retirement.# YouTube-embed:F-Z9iE0AHNM CSIS briefed Natural Resources Canada about Dennis Lu not once, not twice, but three times between 2000 and 2021. For two decades, Canada's spy agency flagged concerns about a senior scientist collaborating with Chine…