The Cheapest Calories

When we visited Maui recently, I saw sugar cane for the first time--

Sugar cane came to the Hawaiian Islands with the Polynesians in the range of 300-800 AD.  It was a part of a complex and sophisticated lifestyle.  As the Hawaiian version of the industrialization of agriculture, the plantation owners of the 19th century started large-scale cultivation and the importation of sugar to the United States.  Massive, industrial scale sugar production has enormous human and environmental health impacts.  William Banting wrote about this almost 150 years ago.  The issue gets much less attention than it should.  As we ride down the back side of the petroleum curve, the effects may actually worsen.

I started to comprehend the human effects about 11 years ago.  In 2001, a friend of mine started the Atkins Diet.  Atkins is a low-carbohydrate diet.  He lost weight, which puzzled me.  I had been running marathons and further since 1978.  Except for trying to eat a vaguely (as I imagined) balanced diet, I ate what I pleased with some allowances for avoiding sugar crashes in endurance bouts.  I sort of bought into the low fat, calorie management conventional diet concepts.  As it turned out, I wasn't thinking like an evolutionary biologist, despite my degrees in the field.

Aloha Petroleum

We visited the Hawaiian Islands recently, specifically Maui.  As usual, I got interested in the natural history of the place, including human impacts.  Our resort was in a part of the island that's mostly a mesquite bosque, with mongooses scurrying back and forth.  The mongooses were too fast for me to photograph, but the mesquites, called Kiawe Trees, held still--

Mesquites, mongooses, and innumerable other plants and animals share something with petroleum; they're all imported.  Hawaii is famous as a living laboratory of biogeography.  The archipelago is so remote that living things only rarely reached the islands on their own.  Their descendants evolved into an array unique of species, like the Haleakala Silverswords and the Nēnēs.  When people, beginning with the Polynesian ancestors of the original Hawaiians, first arrived they brought new plants and animals, often wreaking havoc on the native ecology of the islands.  Europeans and Americans were fuzzy on what was useful.  The links above describe the spread of Kiawe trees, which were useful to people, and mongooses, which weren't.  The Polynesians who settled Hawaii, starting in 200-500 AD, had a pretty good idea what was useful.