On with the show!
Light microscopy at its ultimate, the shadow of a single atom. That is light microscopy, which we typically say is only able to resolve images no larger than a small bacteria or particularly large virus, so I think WOW is appropriate. This was accomplished by holding a single atom in place in vacuum via some pretty cool electrical physics, shining light on the atom, and then using an extremely high resolution sensor to record the shadow cast. This could lead to some pretty amazing images being made of very delicate structures.
There is currently an outbreak of Legionaire’s in Edinburgh, Scotland. Legionaire’s is a fascinating disease, and it is amazing that there aren’t more outbreaks considering how widespread the causative organism is. Legionaires’ disease is a serious bacterial pneumonia caused by the legionella bacteria, and makes for a great disease to examine for class discussions. Legionella appear to live at least part-time in freshwater protozoa such as acanthameoba when they aren’t infecting humans, making them doubly interesting.
Topics can range from the history of the disease, from when it was discovered during an outbreak at an American Legion conference in Philadelphia, to how human activity has produced niches for the legionella to thrive (fountains, cooling towers at power plants and factories, air conditioning catch pools), and how weather and climate can affect disease spread (cases increase after storms). This pathogen is especially important as many nations have an aging population, and the elderly are particularly at risk for Legionaires’ disease.
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Moth eyes inspire nano level structures that enhance xray imaging.
The Gaurdian has a video explaining what the Higgs boson is in laymans terms, which are just right for me.
More on the wonderful tiny phorid flies that were featured yesterday.
I find the concepts within evolutionary medicine to be fascinating, if not always useful… Science Based Medicine has a good examination of the topic. Make sure you read the comments, especially Drs. Gorski and Crislip.