Showing posts with label biology. Show all posts
Showing posts with label biology. Show all posts

Tuesday, April 11, 2017

Cannibalism: A Perfectly Natural History, by Bill Schutt. Algonquin Books of Chapel Hill, 2017




People tend to think of cannibalism as something rare and weird and horrible. In fact, it’s pretty common. Pretty much every part of the animal world has cannibal species in it. We all know about the praying mantis female eating her mate, but lots of insects, spiders, fish, amphibians, and even mammals dine on either their spouse or their children. Sometimes the children eat the parents. Those mouth breeding fish? The ones where the male holds the brood of babies in their mouth while they mature? Yeah. Sometimes they get hungry and have a little snack. Mice eat their young in overcrowded conditions. Higher on the family tree, chimps and polar bears do it. Some sharks eat their siblings while they are still in the womb. Some creatures eat each other when there is food scarcity. Some creatures only eat parts of each other- there is one species that eats the lining of the mother’s uterus while still inside.

But it’s not just critters. Humans perform cannibalism, too, and it’s not just the Donner party and Hannibal Lector. Sometimes it is a matter of survival, like the Donner party and the survivors of the airplane crash in the Andes. The people are already dead; they aren’t killing them for food; they are just taking advantage of what is there so they can survive. That’s not the only time humans eat each other, though. Sometimes it’s done to honor the beloved dead- sort of grokking their loved ones. Most often, though, people eat only parts of each other. In the past in Europe, there were many ‘cures’ that involved things like powdered skulls and the blood from a hanged man being ingested. These days, some women eat their own placenta after giving birth. Most don’t tend to think of these cast off bits of humanity as being parts of people, but they are.

Then there is the issue of false accusations of cannibalism. It seems like an awful lot of indigenous people have been accused of this habit when they are inconvenient for conquerors. Want the tribe’s land? Just call them cannibals and it’s okay to kill them off; you’re just saving yourself from danger! It happened all over in the tropical American areas when the Spanish first came into the area.

Biologist Schutt takes a fairly light hearted look at cannibalism. He deals in both data and anecdote; the prose is a fast and easy read. His style of dealing with taboo subject matter reminded me of Mary Roach (“Stiff” and others); a very readable overview of something with big squick value. 


The above is an affiliate link. If you click through and buy something- anything- from Amazon, they will give me a few cents. 

I received this book free in return for an unbiased review from the Library Thing Early Reviewers program. 

Neither of these things influenced my review.  


Sunday, June 7, 2015

Tasty: The Art and Science of What We Eat, by John McQuaid. Scribner, 2015





“Tasty” claims itself to be a “brief biography of flavor” and indeed it is. McQuaid shows how taste was possibly the first sense to develop in life- 500 million years ago, sea anemones, who are restricted to eating whatever the water brings them, needed a way to tell food particles from non-food particles. Whoever evolved a method of doing this first had a distinct advantage over critters that didn’t have that ability. The sense of taste is not just confined to our tongues we have taste receptors in other parts of our bodies- including in our intestines. That wasn’t an image I wanted to dwell on. Speaking of tongues, that diagram they show everyone in science class, with the tongue divided into bitter, sweet, salty, and sour? It’s bogus, and they knew it was almost as soon as it was made up, but somehow it just won’t die. Also, there is a fifth flavor- umami- which is meaty and yummy and the epitome of it is monosodium glutamate. Fat *may* be a sixth flavor.

Different people have different taste sensitivities. Some people are very sensitive to bitter-the author posits that they might have been able to detect poisonous foods back when humans were first learning what was safe to eat. Other people enjoy a touch of bitter, and revel in broccoli, coffee, and dark chocolate. Some have a much higher tolerance for capsaicin than others. Everyone is born liking sugar, but other food preferences are learned, like being able to tolerate that revolting (to most of us) rotten shark that is eaten in Iceland. Flavors can be perceived differently depending on things like the color of the plate the food is eaten off of. When a recipe is put together, different flavors build together to create a sensation of deliciousness that is greater than the sum of the parts.

This is a very good book that covers the subject well. It’s well researched and well written. It’s written in terms that the average reader can understand but isn’t dumbed down. It touches on both the science and history of food and flavors. Interesting for both the foodie and the science buff. 


The above is an affiliate link. If you click through and buy something, Amazon will give me a few pennies. This does not influence my review.