just 15 years ago. I wonder if any of the attendees at COMDEX thought to themselves “One day, I can cook my steak with the help of a tiny glowing tool that changes colors when my meat is cooked to perfection.” Probably not. Thankfully Sharper Image did, so now you can cook your steak and monitor it from your smart phone.

Maciej Winiarcyzk using more than two thousand digital photographs just over a month ago.

I have never had the privilege of seeing the northern lights in real life, but my sister lives in northern Canada and has told me about them. (She’s a pretty credible source: She even named her daughter Aurora.) After asking her, “What ARE the northern lights,” several times, I now understand the aurora borealis to be a visual effect of the collision of solar wind and magnetospheric charged particles with the thermosphere. Can you see why I had to ask what the northern lights were more than once? The northern lights are most spectacular near the North Pole and during spring and autumn equinoxes. (And, by the way, no. The northern lights are not Santa’s off-season hobby.) But the northern lights, if there are some geomagnetic storms a-brewin’, can be seen closer to home, too, visible occasionally as far south as Chicago or New York.

Anyway, this guy Winiarcyzk is an astronomy enthusiast who lives in Caithness, which is at the tippy top of Scotland. There’s isn’t much light pollution way up there, so it’s a good place for such a sky-minded person to live and enjoy his hobby. Wonderfully, with this time lapse video of the northern lights, we get to enjoy his hobby, too.

Take a look. Have you ever seen anything more lovely occurring in nature? You know, with all this solar wind, magnetospheric particles, thermospheres, and geomagnetic storms, it sure seems like there is a lot more going on in nature than we can readily sense.

A smart thermostat is an upgrade from the standard controls of a heating and cooling system. These digital devices are programmable, adjusting the temperature up or down according to the time of day, but what really sets them apart is their wireless connectivity. You can control a smart thermostat remotely through the Internet with a smartphone, tablet or computer. Once your thermostat is installed, they’re easy to use, efficient and give you data that helps you save money.

It’s happened to nearly everyone. You come home and your heating or cooling system is running even though the house has been empty for hours. With a smart device controlling your furnace and air conditioner, you avoid this wasteful situation. Set your HVAC controls to mesh with your weekday and weekend routines. If you get up everyday at 6 a.m., program the thermostat to feel comfortable as you wake up. When you leave for work a couple of hours later, your furnace will adjust to the temperature of your choice.

Controlling your thermostat remotely with a smartphone is especially helpful if you have a change in schedule. If you come home early, adjust the heating or cooling system on route with a phone or tablet. Your home will progress to a comfortable temperature in time for your arrival. Abrupt changes in temperature waste energy, so resetting your thermostat remotely for a gradual change is economical.

Smart thermostats give you a lot of data in real time, allowing you to monitor energy use and approximate costs. Once you take a look at your habits, you might find ways to fine-tune them. Some thermostats also have apps that guide you to the most economical settings.