´╗┐NEW SMOKE ALARMS.

I recently replaced the smoke alarms in all my properties, including the smoke alarms in my own home. These alarms hadn’t expired, so you may be wondering why I did it. When smoke alarms first came on the market, they worked by ionization. Ionization smoke alarms contain Americium, a radioactive man-made element. Americium is far more radioactive than Plutonium, from which it is made.  I can’t explain to you how ionization smoke alarms work or how much Americium is in them. I know nothing about nuclear physics. My new smoke alarms are photoelectric. They work on a different scientific principle than ionization and contain no radioactive material. Photoelectric smoke alarms work much better than ionization smoke alarms. Photoelectric smoke alarms are far less likely to emit false alarms than ionization smoke alarms. My old ionization smoke alarm used to go off every time I broiled a hamburger, but since I switched to a photoelectric smoke alarm, that doesn’t happen anymore.


Are radioactive household products safe? The Federal government says that radioactive smoke alarms are ‘safe’, but I am suspicious of that claim. I am old enough to remember lots of consumer products that the government said were safe but that were later off the market because they emitted too much radiation, like wristwatches with radium dials and chemistry sets with uranium in test tubes for kids to play with. I didn’t have a chemistry set, but I did have a wristwatch with a radium dial. Back in 1920s and 1930s, several companies in Germany made chocolate bars with radium in them. People often ask me to make chocolate bars with weird stuff in them, but nobody has ever asked me to make radioactive chocolate bars – at least not yet.

Have You Ever Heard of Vaseline Glass? If you’ve never heard of vaseline glass before, and you may find this story hard to believe. Vaseline glass is glassware that contains uranium. It’s called vaseline glass because the color of this glass is similar to that of petroleum jelly. Under black light, vaseline glass turns a bright iridescent green from the uranium in it. The amount of uranium in vaseline glass can vary a lot. Some vaseline glass is only 2% uranium by weight, but some of it is 25% uranium. Vaseline glass that is 25% uranium is dangerous to touch or even be around. Unfortunately, you can’t tell how ‘hot’ a vaseline glass item is by looking at it. In the 1920s and 1930s, millions of vaseline glass household products were made and sold in the U.S. The manufacture of vaseline glassware briefly stopped during World War 2 because the government bought all the uranium available to make atomic bombs. A lot of people collect vaseline glass, even though they know it is radioactive. There are thousands, literally thousands, of vaseline glass objects for sale right now on eBay. Some are quite beautiful. Just take a look at the pictures of them on eBay. A lot of vaseline glass objects were made for children, including toys, dolls, cups, and mugs. What sort of parent would serve their children milk or juice in radioactive glasses? I knew a woman in Oakland who had display cases in her living room containing hundreds of vaseline glass objects. She invited me to her home to show me her collection and to have a meal on her vaseline glass dinnerware, but I made an excuse for not going. Frankly, I wouldn’t feel comfortable eating food on radioactive plates. Would you? I have known several people in my life who were big-time collectors of weird and disturbing things like radioactive dinnerware. My stepmother collected tobacco jars. She began collecting them late in life and after a number of people who she knew well had died from lung and throat cancer caused by smoking. At the time of her death, my stepmother had over 300 tobacco jars in her home. They were everywhere. She also collected carved elephant ivory figurines, an even more antisocial product in my opinion. I don’t understand why people collect creepy stuff like this, but many people do. The federal government says that uranium glass is ‘safe’; however, if you have vaseline glassware in your home, my advice is to get rid of it.

SAN FRANCISCO’S BIZARRE 6X6 SHOPPING MALL.

The 6X6 Mall on Market Street between 5th and 6th Streets is the biggest shopping mall in downtown San Francisco. This huge 5-story mall is beautiful and has everything you would expect to find in a luxury shopping center, including a 4-story greenhouse atrium and a double helix escalator that can be seen from the street. There is only one thing missing from this shopping mall – stores! There are no stores. There are no restaurants. There are no kiosks. This mall was completed in 2016, but it is still completely vacant. The owners have tried everything to lure in tenants, but nothing has worked. The problem is the location. The 6X6 Mall is in a bad section of the Tenderloin district. All of the stores adjacent to this mall and on the other side of the street are abandoned and boarded up, with homeless people sleeping in doorways. This is another example of: ‘What were they thinking?“, building a luxury shopping mall in the poorest and most depressed area in the city. A few weeks ago, the 6X6 Mall was sold to a couple of major commercial real estate investment firms. They haven’t said what they plan to do with it.

LAS VEGAS REALLY IS GETTING HOTTER.

I recently returned from a convention in Las Vegas. It was 110 degrees every day I was there. A lot of long-time visitors to Las Vegas say that it seems that Las Vegas is getting hotter, but most of them assume that its just their imagination. It isn’t. Las Vegas really is getting hotter. According to the U.S. Weather Service, the average daily temperature in Las Vegas has risen by 6 degrees since 1970. That is a very big increase for 50 years. You might assume that this is because of global warming, but that isn’t the reason. Las Vegas is what climatologists call a ‘heat island’. In 1940, the population of Las Vegas was just 8,000. When I first visited Las Vegas in 1970, the population of the city was a little over 100,000. Today, the Las Vegas metro area is home to 2 million people, and the temperature has risen with the population. Here’s why:

1.    Building materials. As the city grew, more and more of the desert was covered with concrete, asphalt, and buildings. Buildings and paving materials absorb heat during the day and release that heat more slowly than the sandy desert that they covered over.

2.    Color. The desert around Las Vegas is mostly light-colored sand, which reflects much of the sunlight that falls on it back into outer space. However, the streets of Las Vegas are covered with asphalt, which is black, and there are tens of thousands of houses in Las Vegas covered with dark colored roofs, which also absorb heat.

3.    The air. As the city grew, so did the number of automobiles, trucks, and smokestacks. When Las Vegas was a small town, the air was thin and clean. Now the air is much denser and full of smog. The air in Las Vegas now absorbs more heat than the air in the desert around it.

What is happening in Las Vegas is also happening in Phoenix and several other fast-growing cities in the southwest. Some long-term real estate investors (including people I know) will not invest in Las Vegas. It can take 15 to 20 years to recover the cost of building an apartment house, and what will the climate in Las Vegas be like then? What will the air be like? What will the traffic be like? Will tourists still want to visit there if the average daily temperature in summer is 120 or 130 degrees? Las Vegas is heading in that direction now. I’ve been in Las Vegas when it was so hot that you could get a first-degree burn by touching something made out of metal, and that happened to me. I once tripped on the sidewalk in front of Circus Circus and put my hand on an aluminum lamppost to break my fall, and I burned my hand. Now, I don’t touch anything outdoors in Las Vegas that is made out of metal on hot days unless it is in the shade.