grandmother

After staying with us for about a month, ScienceGrandma is now on the plane flight back to her home. Last night was our first night without her. Below the fold, a few reflections on living with three generations under one roof. I am happy to be returning to the master bedroom and bath, which we had given up because of accessibility issues. For the duration of her visit, we'd moved a guest bed into my home office and I'd cleared off some bookshelves for clothes. Two adults and a toddler in a single tiny bathroom gets a bit crowded, especially because of needing to keep everything out of a…
You could argue that life is all about cheating death and having enough sex to pass on your genes to the next generation, as many times as possible. From this dispassionate viewpoint, human reproduction is very perplexing for our reproductive potential has an early expiry date.  At an average age of 38, women start becoming rapidly less fertile only to permanently lose the ability to have children some 10 years later during menopause. From an evolutionary point of view, this decline is bizarre. Other long-lived animals stay fertile until close to the end of their lives, with elephants…