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My late father-in-law used to say “A weed is any plant in a place where you don’t want it.”  Yes, I have a wineberry weed in a stone wall in the middle of a flower garden. Later this year I will have to take apart a section of stone wall and try to dig out the roots of... Read More

A Helicopter on Mars!

As I write this NASA is preparing to fly the Ingenuity helicopter in the skies of Mars. The Ingenuity helicopter is a “technology demonstration” designed to show that controlled flight is possible in the thin atmosphere of Mars. Credits: NASA/JPL-Caltech Ingenuity had to be custom built to make this possible but it was made with... Read More