TORONTO (Reuters) - Canada's currency firmed against the U.S. dollar on Tuesday as risk appetite was whetted by reports of European rescue efforts for debt-strapped Greece.

TORONTO (Reuters) - Toronto's main stock index rallied on Tuesday as commodity prices got a lift from a weak U.S. dollar and investors sought riskier assets on speculation that a rescue plan was in the works for Greece's debt problems.

The Toronto stock market was well into positive territory Tuesday as investors hoped that European leaders will move to address worries about severe government debt issues on the continent.

Canadian stocks stormed out to early gains and remain firmly positive in mid-morning deals Tuesday amid widespread buying.

The Toronto stock market has made gains on investors' hopes that European leaders will move to address worries about severe debt problems of Greece, Spain and Portugal.