The starting point is that the front of your eye is a living surface with no blood supply, exposed to open air, that must stay optically perfect. Almost everything below…
The whole subject rests on one arrangement: a stored precursor and an enzyme, kept in separate compartments inside the cell, which combine the moment anything damages the tissue. Here are…
There is a long-standing assumption in how intelligence gets discussed, and corvids are the clearest available argument against it.
The assumption is that sophisticated cognition requires a particular kind of…
Cheese is a protein network holding fat and water inside it. Heat loosens or tightens that network depending on how it was made, and every behaviour below is a consequence…
There is an assumption embedded in ordinary language about growing old, and it is worth examining because it turns out to be misleading.
The assumption is that ageing is what…
Most complicated biological structures are alive. They are supplied with blood, monitored by nerves, maintained continuously and repaired when damaged.
A feather is none of those things. Once grown, it…