Starbucks (SBUX) posted its first quarter of North America and US same-store sales growth in two years on Wednesday as the company continues its turnaround efforts under CEO Brian Niccol. In its fiscal first quarter ended Dec. 28, Starbucks reported US and North America same-store sales rose 4%, topping estimates for a 2% rise. The increase was driven by a 3% increase in comparable transactions and a 1% increase in the average ticket. "It is clear from our top line results that are back to Starbucks pla ...