Category Archives: climate change

Revisiting the Overpopulation Question


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One of the strange things about my profession is that I can never predict what the public will be fascinated by. Some years ago, I wrote a paper predicting that the sperm quality of men in less industrialized populations would not be as compromised as that of us men in the developed world. But what went viral was the paper’s introduction, which repeated what pretty much every gamete researcher already knows, that measured sperm quality has been declining for decades. Continue reading Revisiting the Overpopulation Question

Uranus Is Not A Black Hole


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Uranus Is Not A Black Hole

History made! Decades ago, I recall explaining to someone in my patented condescending tone that it is impossible to photograph a Black Hole. Guess what? Once more, I was wrong wrong wrong. Behold, the first photograph of the event horizon around a supermassive Black Hole. This is indeed wondrous: Continue reading Uranus Is Not A Black Hole

Health and Climate Change


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One of my students couldn’t attend today’s lecture on health and climate change, so she asked me to podcast it for her!  So, why not? Slides are available here.

This episode also streams from Youtube: