Jean-Louis Tu <[log in to unmask]> wrote: Don Wiss wrote: >>Eggs would have only been available for a few weeks in the >>spring. Fruits may not have been available that early in the season. Then >>nuts come in the fall. Some fruit would still be available, but later in >>the fall it would have only been nuts. I would expect that nuts were stored >>and eaten for a while after being harvested from the tree. >Does it apply for tropical countries as well, i.e. are a whole category of >foods (like fruits, or nuts, eggs) available only seasonally? There are also seasons in the tropics, where the off season is a dry season. But those of us from Europe had ancestors that left the tropics some 500,000 years ago. >Other naive question: how come we can (nowadays) obtain hen eggs all year round? Chickens are raised in hen houses in which day length is controlled by artificial lighting - it is day length which stimulates changes in hormonal profiles which induce ovulation (i.e. egg laying). Don.