Scientists across America are celebrating the passing of the Bush administration as the end of a dark age, a bleak stretch in which research budgets shrank and everything — stem cells, sex education, climate change, and the very origins of the Grand Canyon — became a point of conflict.

But in Canada’s research community, Mr. Obama’s plans have sparked anxiety that if this country fails to keep pace, it will have a tougher time recruiting smart people and convincing talent not to flock south. In short, Canada could lose its competitive edge to the Obama advantage. As U.S. emerges from dark age, Canada’s scientific edge fades