How infectious diseases work
2025-08-08 12:20 Infectious diseases is always something transferred to the affected.  Contagions don’t arise spontaneously when people do certain things.  Instead they have to be conveyed from someone already infected.
What is hygiene?
2025-07-31 19:57 Nowadays hygiene is foremost associated with washing and removing. But it may also mean keeping things separate. Such a separation between things is often taken for granted today.
To differ pharmaceutical industry from modern medical care
2025-07-15 19:15 Modern medicine is subject to the same error as denial of the existence of space.  Everyone occupied with it are taken for granted to be part of the same organisation.  In reality medical care is offered by loads of different groups.
What is genetic engineering?
2025-07-10 18:34 There is a reason why the word genes is linked in the last few blog posts.  A great deal have a wrong idea of what genes are.  I have read about people believing that genes are something artificial added to food.
What is DNA?
2025-06-29 19:02 It is the very substance our genes are made of.  Usually it is depicted as a rope ladder twisted like a helix.  One can say the molecule is shaped approximately like that.  It is in turn built from four smaller molecules.
Why inbreeding is a bad idea
2025-06-25 13:13 It seems like humanity is particularly sensitive to inbreeding.  If so it is because evolution has changed our ancestors too quickly.  The locomotor system has changed considerably in 3.5 million years.
Why the eugenicists were wrong
2025-06-19 17:29 Eugenics arose at a time when the pace of evolution was unknown. Charles Darwin himself thought it was a very slow process. But many of his admirers believed it went at breakneck speed.
The blonde and blue-eyed myth
2025-06-04 10:50 Here in northern Europe there is a widespread myth of an earlier homogenous appearance.  Before a certain point in time all the area’s inhabitants would have been blonde and blue-eyed.  Nazis would add strait hair and strait noses to that.
Peoples of the sail
2025-04-25 17:02 I call the Austronesians peoples of the sail since they spread agriculture by literally sailing out into the world.  Most areas they came to had no agriculture earlier.
The deficiencies of the Americas
2025-04-18 17:25 Towards the end of the last ice age North and South America were populated. Since the seas were lower then there was no Bering Strait. People could simply walk to Alaska. However, the way south from there was almost entirely ice-covered.