Jennifer Barfield, a professor of assisted reproductive technologies at Colorado State University, clearly explains how it can come about and what led to the development of the technology that has made it possible. The key point is that in addition to the DNA that comes from the father and the mother, the fertilized egg also contains mitochondrial DNA (mtDNA) that plays a vital role in producing energy.
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Albert Einstein’s travel diaries that he maintained on his travels in China and Japan and Sri Lanka (then Ceylon) in 1922-1923 have just been published and they contain descriptions of what he saw that are deeply at odds with the enlightened views we normally associate with him. He makes statements that can at best are described as xenophobic and at worst as racist.
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Readers may recall my post from back in February about the mysterious sounds that were causing headaches (literally) to US embassy personnel in Cuba. It led to all manner of speculations about the Cubans themselves unleashing, or allowing some other nation to unleash, some high tech Cold War-type sonar devices on them. The fact that the evidence produced was highly vague and that the Cubans had no motive for doing such things did not stop the wild speculations.
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This video of a tornado touching down in Laramie, Wyoming last week is awe-inspiring. I had thought that tornados start in the clouds and then touch down on the ground but in this video at the 18-second mark you see that there is also a bottom-up element, a sliver that starts on the ground and joins to the larger part coming from the top. The tightness of the funnel cloud is indicative of the massive destructive power that it can unleash for anyone and anything that has the misfortune to lie in its narrow path.
A couple of weeks ago, I had a post about how the rate at which clocks run is affected by the strength of the gravitational field in which they are in. So a clock on the surface of the moon would run faster than an identical clock on the surface of the Earth because the gravitational field there is less than the field here.
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Questions like the above are inherently ambiguous and will not have an answer that satisfies everyone because of the difficulty of defining what we mean by the word ‘science’ even with the added qualifier ‘modern’. The latest issue of New Humanist has an interview with David Wootton, professor of history at the University of York and author of the book The Invention of Science, who takes a stab at it and argues that “it happened between 1572 (when astronomer Tycho Brahe saw a new star in the sky) and 1704 (when Isaac Newton drew conclusions about the nature of light, based on experiments).”
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A court case in Cleveland into the death of a five-year old girl has taken a strange turn in which the defense has asked the judge to be allowed to present as an expert witness in forensic science someone who believes, among other things, that the Earth was created in just six days as the Bible says.
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I am of the age group where we encounter the phenomenon of people having Alzheimer’s or other forms of dementia on a fairly regular basis, either because our parents or the parents of friends or even in rare cases with people closer to our age group who succumb to early onset forms of the disease. As a result, the conversations often assume the inevitability of our own serious cognitive decline. The attitude is that it is a question of ‘when’ not ‘if’, and various strategies are bandied about as ways of delaying it.
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You may have read of the drug bust that found enough fentanyl to kill 26 million people That is a massive number so I was shocked to lead that the total haul was just 118 pounds, which works out to about two milligrams per fatality. Mark Kleiman explains that fentanyl is one of the most potent drugs, which is why a tiny amount can be so dangerous. He says that fentanyl is just one of a class of synthetic opioids that are far more dangerous than prescription opioids and heroin and also much easier to produce since they do not require an agricultural crop as its starting point but can be made entirely in a lab.
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I think anyone who is ‘successful’ in life (however one defines that word) and is at least mildly thoughtful will have an appreciation of the important role that luck played in them getting where they are. Show me a person who thinks that they achieved their success purely because of their own talent and abilities, and I will show you an arrogant jerk. Where you were born and the circumstances of the family you were born into are two major luck factors but as one grows up, there are so many others such as the friends you happen to make, the teachers you encountered, purely random encounters and events that impinge on your life, and so on. Without much effort I can write down a long list of lucky breaks in my life that have enabled me to be ‘successful’, not in terms of great wealth or fame, but just simply in avoiding disaster or great hardship.
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