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Archive By Author - Rudi Kiefer


Earth Sense: Pacific Rim a constant source for some concern

June 06, 2015 | Rudi Kiefer | Columnists


Electric cars’ power still comes from fossil fuels

Electric cars are fun, no doubt. They emit no harmful gases during operation. The only noise produced is from the rolling of the tires. When all vehicles are electric, the annoyance caused by super-loud exhaust pipes blasting through the neighborhood at 2 a.m. will no longer exist.

May 30, 2015 | Rudi Kiefer | Columnists


Earth Sense: Protect your kids from lightning

Late spring, one of the most enjoyable seasons in North Georgia, is a time for playing outside, having a picnic or simply wandering through the landscape.

May 24, 2015 | Rudi Kiefer | Columnists


Earth Sense: 21st century actions threaten environment

Some of the environmental problems we're seeing in the 21st century started in the previous one. But they are gaining in urgency.

May 17, 2015 | Rudi Kiefer | Columnists


Earth Sense: Keep grass clippings out of the street properly

Some love to do it, some despise it: Mowing the lawn - or "cutting the grass," as we like to call it around here.

May 09, 2015 | Rudi Kiefer | Columnists


Earth Sense: Powdercoating a tough, environmentally-friendly option

Owners of cars and two-wheelers like to customize their vehicles, or even rebuild an old one that reminds them of their younger days. Much of the work involves painting, and that's where problems arise.

May 02, 2015 | Rudi Kiefer | Columnists


Earth Sense: Sunlight is filtered into different colors to the eye

After a clammy early spring, the sun is back finally. It's going to rise toward its highest point in the sky by June 21, the longest day of the year. Measured as an angle from the ground, in Gainesville the sun will be about 78 degrees up. It can't ever be exactly vertical above us because the subsolar point, where the sun is perpendicular above the ground, doesn't move this far north.

April 25, 2015 | Rudi Kiefer | Columnists


Earth Sense: Make your own mulch with leftover plant debris

A lot of plant debris accumulated during the winter. What to do with it all?

April 18, 2015 | Rudi Kiefer | Columnists


Earth Sense: Watch out for ticks when outside in warmer months

Most Georgia residents have been bit by a tick at one time or another.

April 11, 2015 | Rudi Kiefer | Columnists


Earth Sense: Check the weather before planting delicate seedlings

As gardening activities are starting, two factors are crucial: topsoil and weather.

April 04, 2015 | Rudi Kiefer | Columnists


Earth Sense: Trees provide food chain for Georgia wildlife

The region that is North Georgia today was explored a long time ago. As early as the 1540s, Spanish explorers trekked through the Cartersville area looking for gold. None was found there, but we have a golden treasure that's well worth preserving: our native trees.

March 28, 2015 | Rudi Kiefer | Columnists


Earth Sense: Cope with slippage by steering, accelerating gently

So far, March has shown above-average precipitation totals in North Georgia. Based on the historic record, we also have plenty of rain showers to look forward to in April.

March 21, 2015 | Rudi Kiefer | Columnists


Earth Sense: Physics of gasoline explain why it can be explosive

There's enough talk about explosives in the media to have a person worried. Not worried enough, it seems, are some people handling the liquid explosive we use every day: gasoline. Understanding the hazards of this substance requires knowing about its physics.

March 14, 2015 | Rudi Kiefer | Columnists


Earth Sense: Inversions can bring cold air, fail to remove pollutants

When a chilly wind is blowing from the northwest during daytime, it's easy to understand why it feels so cold. But the reasons for temperature plunges at night are more complex.

March 07, 2015 | Rudi Kiefer | Columnists


Earth Sense: Fiji seems like paradise, but subject to quakes, hurricanes

Conditions like the record-breaking blasts of cold air during much of February make us dream of warmer weather.

February 28, 2015 | Rudi Kiefer | Columnists


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Articles By Author - Rudi Kiefer


Chinese megacity Hefei keeps on growing

Megacities are the trend of the 21st century. This means metropolitan areas that are home to more than a million inhabitants. Atlanta qualifies for the ...

May 01, 2016 | Rudi Kiefer | Columnists


Earth Sense: China can handle challenges of development

Everyone has heard of Beijing, China. With more than 11 million residents, the city stands out even among the other world capitals.

April 23, 2016 | Rudi Kiefer | Columnists


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