Rock Doc

Bridging the valley of death

As a child, I learned about the “valley of the shadow of death” from the twenty-third Psalm. A similar image is conjured up by economists who talk about the “valley of death.” They mean that potentially deadly stage in the life of a business when production needs to be massively scaled up but investors aren’t […]

Giving warning of volcanic eruptions

I was living in eastern Washington State in May of 1980 when Mount St. Helens erupted after a massive landslide triggered by a magnitude 5.1 quake. Vast amounts of molten rock were violently released to the surface of the Earth, erupting not only as sizeable rocks but as fine-grained volcanic ash that floated on the […]

Vitamin D levels can be checked

My mother lives with me and I’m involved in her medical care. She’s a tough cookie. But like many 88-year-olds, she has several health problems. We visit her doctor at least once a month to report what’s working and what isn’t doing the trick. Recently the doctor ordered blood work that showed she was low […]

The total costs of crude oil

Even if I walked to work each day, I would still be indebted for my daily bread to cars and trucks. The many goods we buy in stores arrive at their destinations courtesy of the internal combustion engine. Motors and engines are woven into the warp and weft of all our economic activity from farming […]

Air pollution knows no borders

We’ve all seen globes in classrooms. They represent the Earth well — better than flat maps can do. But all the globes I’ve seen in schools have national boundaries on them, usually indicated by having nations in different colors. The U.S. is yellow, Canada is light green, Mexico is pink, and so on. When I […]

Termites and better biofuels

Every time I fill my gas tank, I see the notice on the pump that explains part of the fuel I’m buying is ethanol. Ethanol is alcohol, a type of biofuel rather than fossil fuel. While biofuels can be good to promote national energy independence and possibly help with greenhouse gas emissions, the ethanol in […]

A step forward in predicting volcanic eruptions

There are two main things most people would like to know about particular volcanoes: when is the next eruption and how big will that eruption be? Scientists in Iceland have taken another step forward in monitoring volcanoes to best predict when they will erupt and even warn people of the size of the coming eruption.

Designing better asphalt

Dr. Haifang Wen grew up in a rural area of Shandong province, in eastern China. In his youth there were not many paved highways in the Chinese countryside. “Lots of the roads were gravel,” he told me recently. “They were muddy when it rained. I remember riding a cow on them, or going along in […]

Small but splendid snowflakes

Those of us living in the northern half of the country can be forgiven for being tired — at this stage of winter — of shoveling snow. I enjoy the brightness snow can bring to dark winter days, but I’m getting old enough that shoveling the walk in front of my house has very little […]

A brisk walking pace is better

One of the things my mutt from the pound and I like to do together is go on long walks. Sometimes on weekends Buster Brown and I stroll at the bottom of the Snake River Canyon where dogs can be off-leash (as Mother Nature intended). There’s a six-mile walk in the canyon we like to […]