The reptilian brain is a myth that should not be taken seriously and yet is referred to by many writers and is even seen in educational sites for children. It is the idea that we have three brains: a reptilian one, the paleomammalian one and the mammalian one. The story goes that these were acquired […]
In this blog post, I am going to discuss the human microbiome – the vast and astonishingly diverse collection of organisms that live inside our own bodies. If you think of yourself as… Continue reading →
DNA sequencing has made its way to the clinic in a dramatic new way: detecting chromosomal defects very early in pregnancy. We've known for 25 years that traces of fetal DNA can be detected in a pregnant women's blood. But these traces are very small, and until now, we just didn't have the technology to detect an extra copy of a chromosome, where the DNA itself is otherwise normal.Last week, in a study published in The New England Journal of Medicine, Diana Bianchi and colleagues showed
The Iron Bridge I am standing on a disused iron bridge that was erected in 1902 according to the iron plaque bolted to a beam, the year my mother turned one. Imagine—a mother in her infancy, and she was a...