National Geographic seriously tries to convince us that CO2 has made it too warm to grow potatoes at 11,000 feet in the Andes

Warming to Spur Potato Famine in the Andes?

When Tito Guillen Rosales was a young boy, his grandfather was a rich man, growing 50 bags of potatoes a year and sharing his surplus with community members who didn't have enough.

"But now his potatoes are covered with worms and plagues and he barely has enough to feed himself," said Rosales, 27, a farmer himself and the mayor of a Peruvian village at 11,000 feet in the Cordillera Blanca range of the Andes mountains.
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The study of 268 mountain record stations found a temperature increase of 32.2 degrees Fahrenheit (0.11 degrees Celsius) per decade, compared with the global average of 32.1 degrees Fahrenheit (0.06 degrees Celsius) a decade.