Apparently my Feedburner email subscriptions are no longer working, so if you subscribe to this blog via email you probably have not received any notifications recently. This seems to be a problem common to many blogs, but I have not been able to find out how to fix it. However, I can suggest a possible work-around. Go to www.feedspot.com , create an account if you don't have one, and enter the URLs for sites you want to follow. They will send you an email notification of new posts.
My son, age 30, sits close beside me, copying for the millionth time the Fujita Scale of tornado strength. The scale only goes to F-6, but he insists that I describe for him the theoretical damage of an F-7, an F-12 . . . Browsing the science news on my laptop, I come across a journal called Medical Hypotheses. Doctors speculate that a certain growth protein abundant in breast milk might protect at-risk infants from developing autism.