Some airlines say they're getting squeezed by a shortage of limes.
A spokesman for United Airlines, which is part of United Continental Holdings, says the airline is currently flying with only 15% to 20% of its usual stock of limes.
"If the caterers are light on limes when they supply our flights, then we'll serve lemons," said Rahsaan Johnson. "We've asked them to continue to provide limes where available, but to cater more lemons until lime supplies normalize," he added.
Could guacamole and some salsas become victims of global warming? Possibly, says Chipotle Mexican Grill.
The restaurant chain, in an annual report, listed drought and global weather change among a long list of business risks faced by the company.