The question is not “is climate change happening?” The question is, “what are we going to do about it?” Some people continue to deny it, others choose to look the other way and hope it will go away, and another group only want to take action if it doesn’t interfere with economic growth.

In his book Tipping Point, Malcolm Gladwell described a similar scenario. It was the early 1400s and the world was getting colder, not warmer. In Greenland there were two populations – the Vikings and the Inuit. As temperatures dropped, the Inuit were OK, because their staple was fish. The Vikings liked their meat, so when grass growth slowed down, they first ate their mature animals, then the young, and then their dogs. Archeological evidence reveals that the population crashed – and it happened rapidly. The lesson for us is our adaptive capacity.

Bananas as one of many climate change solutions for Northland

The Drawdown project as described in this post, identifies reductions of 1,051 gigaton of CO2 that can be achieved by its top 80 solutions. Food solutions account for 31% of these reductions – 325 gigatons.

Number 14 on the list are tropical fruit crops (including bananas), accounting for a reduction of 20.19 gigatons of CO2 globally, over 30 years.

Tropical staple crops currently grow on 116 million acres, mostly in the tropics. Their rate of sequestration is high at 1.9 tons per acre per year. Expand this area by another 153 million acres by 2050 and they can sequester 20.2 gigatons of additional carbon dioxide. Our analysis assumes that expansion only occurs on existing cropland, with no forest clearing. Because their yield is 2.4 times higher than annual staples—at 60 percent of the cost—savings are signicant, while cost to implement is low. (Drawdown)

New Zealander’s consume about $18 kgs of bananas a year, mostly all imported. If we can grow our own bananas, we would need about 7,700 hectares of bananas to meet our own needs. Northland is great place to grow bananas. We are at the warm end of the temperate zone, but as we are a long skinny peninsula surrounded but the Pacific Ocean and Tasman Sea, our climate is benign enough for some tropical crops, especially those from higher tropical altitudes.

Bananas vs. white bread

So can we adapt or are we the 21st Century Vikings? One thing we could do, is to plant and eat more bananas (grown as a perennial crop), and eat less white bread (using wheat derived from an annual crop). Here are some comparisons.

Go bananas!

In another lesson from history, The people of England were collectively traumatised by the First World War and didn’t want to be involved in another. They tried to ignore the threat that Adolf Hitler posed in a “fog of denial”. But Winston Churchill persisted in raising the alarm.

“The era of procrastination, of half-measures, of soothing and baffling expedients, of delays is coming to its close. In its place we are entering a period of consequences.”

Bananas are part of our Northland climate change solution, so to paraphrase Sir Winston, … we shall plant them near the beaches, we shall plant them in the school grounds, we shall plant them in the fields and in the streets, we shall plant them in the hills; we shall never surrender.

[1] from  Dr. Furhman’s Nutrient density chart https://www.drfuhrman.com/content-image.ashx?id=73gjzcgyvqi9qywfg7055r

[2] from SelfNutritionData: http://nutritiondata.self.com/topics/glycemic-index lowest number is best

[3] For additional nutritional information about bananas: http://nutritiondata.self.com/facts/baked-products/4872/2

[4] For additional nutritional information about white bread: http://nutritiondata.self.com/facts/baked-products/4872/2

[1] from  Dr. Furhman’s Nutrient density chart https://www.drfuhrman.com/content-image.ashx?id=73gjzcgyvqi9qywfg7055r

[2] from SelfNutritionData: http://nutritiondata.self.com/topics/glycemic-index lowest number is best

[3] For additional nutritional information about bananas: http://nutritiondata.self.com/facts/baked-products/4872/2

[4] For additional nutritional information about white bread: http://nutritiondata.self.com/facts/baked-products/4872/2