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Betelgeuse, Betelgeuse, Betelgeuse 0

Betelgeuse, Betelgeuse, Betelgeuse

You’ve probably heard that Betelgeuse has recently been showing signs of instability. This might be a sign that it’s going to become a supernova. Yesterday, Ctein considered the question of how bright it would...

Balloon Flowers 0

Balloon Flowers

We’ve had an interesting flower in our garden for the last couple of years called the balloon flower. You can see how it got that name from this picture: That’s what the  blossom looks...

Add Sugar and Sell It 0

Add Sugar and Sell It

For the 4th, Stephen Fry posted a lecture he gave a while back that tries to capture what it is that makes America unique. A lot of people have tried that in the past,...

Mulberries 0


Every year in June, one of the trees in our yard starts shaking. If you look closely, you’ll see that it is full of squirrels and birds. You’ll see bluejays, goldfinches, rose breasted grosbeaks,...


4th of July

It’s not the Boston Pops, but here are a few pictures from the Lexington fireworks last night.



Arthur Benjamin recently gave a TED talk about changing the focus of math education. The short version is that he thinks the focus should be on getting kids to a solid understanding of statistics...

Moon 2


Chris and I went to see the movie Moon the other night. It’s about a guy who’s nearing the end of a three year tour working at a mining base on the moon. He’s...

Broiled Cod 1

Broiled Cod

We got another cod from the CSF today. A beautiful 5 pound one. We decided to broil it. Here’s the recipe: Broiled Cod with Butter and Herbs 2 tablespoons fresh tarragon 2 tablespoons fresh...

Balanced Ternary in MATLAB 0

Balanced Ternary in MATLAB

I wanted to do something with balanced ternary the other day, so I wrote this MATLAB class. classdef bt % Class for managing numbers in balanced ternary. % properties (SetAccess=’private’) trits = ”; end...


First Band Concert of the Summer

In the summertime in Lexington, there is a band concert every Tuesday night. The Lexington Bicentennial Band plays. They’re very good. Tonight was the first one for this season because the High School ran...