Active Volcanoes On Venus

Active Volcanoes On Venus

An international team of scientists has found some of the best evidence yet that Venus, Earth's nearest neighbor, is volcanically active. In combing through data from the European Space Agency's…
Markdown, Mobile-Friendly Web Sites, and eBooks

Markdown, Mobile-Friendly Web Sites, and eBooks

I write drafts on paper. It would be nice if the electronic versions of documents looked similar to the drafts. It would be even better is the same paper-like form could be used for a web…
How Jet Contrails Affect Surface Temperatures

How Jet Contrails Affect Surface Temperatures

High in the sky where the cirrus ice crystal clouds form, jet contrails draw their crisscross patterns. Now researchers have found that these elevated ice cloud trails can influence temperatures on…
Early European Human Had A Neanderthal Ancestor

Early European Human Had A Neanderthal Ancestor

Neanderhals became extinct about 40,000 years ago but contributed on average one to three percent to the genomes of present-day Eurasians. Researchers have now analyzed DNA from a 37,000 to 42,000-…
Lego Optics Lab: Small Lens Holder

Lego Optics Lab: Small Lens Holder

In my previous article, I started building a Lego optics lab with a dichroic prism I salvaged from an old computer projector that I took apart (I used the prism to build a beam splitter). I also…
EWG's Little Site Of Horrors

EWG's Little Site Of Horrors

And I thought *my* job was fun.  I regularly get to ridicule an incredible variety and quantity of nonsense that poses as science and medicine. Some of it borders on hilarious.  On the…
3-D Printing Is Not Just Hype

3-D Printing Is Not Just Hype

A company in the Netherlands is building a bridge across a canal in Amsterdam using 3D-printing robots. It seems that such attention-grabbing headlines appear regularly to declare how 3D-printing is…
Seeing Jupiter In Daylight

Seeing Jupiter In Daylight

Have you ever seen Venus in full daylight ? It's a fun experience. Of course we are accustomed to see even a small crescent Moon in daylight -it is large and although of the same colour of clouds, it…
Clues Point To Sulfur In Earth's Core

Clues Point To Sulfur In Earth's Core

Researchers have found chemical evidence for the presence of sulfur in the Earth's core. They determined the composition of the core, which is inaccessible to direct sampling, by analyzing isotopes…