PRESS DIGEST - Canada - July 21

July 21 (Reuters) - The following are top stories from selected Canadian newspapers. Reuters has not verified these stories and does not vouch for their accuracy.

THE GLOBE AND MAIL: - In a stunning display of industrial brinkmanship, Research In Motion Ltd (RIM.TO) is alleging that Nortel Networks shut it out of the bidding for the distressed telecom giant's nationally sensitive wireless assets.

Report on Business Section:

- TransAlta Corp (TA.TO) is sending a clear signal that it is counting on renewable power to fuel its growth for at least the next decade, unveiling a hostile offer for Canada's largest independent alternative energy producer.

- The sharp downturn in freight shipments has bottomed at Canada's biggest railway, yet another sign that the economy is on the mend.

- Claude Lessard and Francois Duffar built Cossette into one of Canada's top advertising agencies. Now the former partners are fighting for control as Duffar launches a hostile bid.

NATIONAL POST:

- More than half the people forced to leave their homes in West Kelowna, B.C., because of a massive forest fire on the weekend will be allowed to return home Tuesday morning but remain on evacuation alert.

- Police investigators believe the human remains of a child found Sunday in a rural area northwest of Guelph are those of an eight-year-old Woodstock girl who has been missing for more than three months.

Financial Post section:

- Brazilian billionaire Eike Batista has snapped up a 9.5 percent stake in Ventana Gold Corp VEN.TO adding to the hype of what was already Canada's hottest junior-gold play.

- Air Canada unions are urging Ottawa to ensure the country's largest carrier does not use its landings slots as collateral to a syndicate of private lenders, arguing the loss of those routes would essentially leave the country without an international carrier.

- Canadian auto supplier Magna International has made a surprise change to its takeover proposal for Adam Opel GmbH, boosting its intended stake and lowering that of its Russian partner.