lawrence seaway. so, in many ways, if you could took us photograph of a port like toledo or cleveland or milwaukee in 1911, the port would look chaotic because there would be hundreds of vessels operating out of that port on any given day. and, it would be different because there would be a wide variety of styles of vessels. in 1911, you still had hundreds of sailing vessels, school nurse, delivering cargo on the great lakes under sail forces a boat like the schoonmaker which was operated under steam. we are now in the engine room of the james schoonmaker museum ship, and it this is the room where the power button that is created to move the ball through the water comes from. originally, the colonel james m. schoonmaker museum ship had expansive xi mentioned. by the 19 fifties, that technology had been supplanted van. so, the engine was taking out and then use team turban system was placed in it and all the equipment that you see in the engine room today it's based on steam turbine technology. except

lawrence seaway, the interstate highway system, he was very moral, not a lot of corruption in eisenhower years. i could go on. you are seeing in the polling the rise of dwight d. eisenhower who was ranked in the middle not too long ago. people thought he did not do much as president, but with the archives open we can see he was a hands-on president. the rise of eisenhower i found particularly interesting. he is now one of the american greats! host: round out the top 10, in sixth place truman, jefferson, reagan, the 10th spot this year, barack obama. president trump coming in at 41st overall, the first year he is part of this historian survey of presidential leadership. edna greene medford, why do this? is it helpful historically? guest: absolutely. it is always important to talk about what is happening in terms of government aid or ship -- leadership. it is important to look at them over a period of time because historians like to view history from a far. we do not like to look at current events so much. if you look at the rankings of these presidents over a period of time, you get appre

lawrence seaway, the interstate highway system, he was very moral, not a lot of corruption in eisenhower. i could go on. you are seeing in the polling the rise of dwight d. eisenhower who was ranked in the middle not too long ago. people thought he did not do much as president, but with the archives open we can see he was a hands-on president. the rise of eisenhower i found particularly interesting. he is now one of the american greats! host: round out the top 10, in sixth place truman, jefferson, reagan, the 10th spot this year, barack obama. president trump coming in at 41st overall, the first year he is part of this historian survey of presidential leadership. edna greene medford, why do this? is it helpful historically? guest: absolutely. it is always important to talk about what is happening in terms of government aid or ship -- leadership. it is important to look at them over a period of time because historians like to view history from a far. we do not like to look at current events so much. if you look at the rankings of these presidents over a period of time, you get appreciatio

seaway going to be much hotter tomorrow. we'll talk about that and the records that were set to that coming up in a few minutes. all right, lawrence, thanks for that. reminder. we are under a flex alert that was issued by cal iso. it's in effect right now. it went into effect at 4 o'clock this afternoon and will last until 9 o'clock tonight that agencies in charge of the state's power grid and is urging people to cut back on their power usage today. >> again, from 4 to 9. this will help relieve stress on the grid and protected from being overwhelmed. here's some tips to help out during this flex thermostats to 78 degrees or higher avoid using major appliances and turn off or even unplug any lights it or not in use. we'll continue to track the heat wave on our kron 4 app uses qr cod% to download the app and get the latest weather updates, including a look at the 7 day forecast in the current conditions and a list of the cooling centers all over the bay area and some developing news to tell you about now. firefighters are trying to figure out what caused this fire near lake merritt in oakland. this evening. it was put out just about