Chris Impens @ Valvas

The meridian In 24 hours, the earth rotates once around the axis which passes through its poles, and which in our times happens to roughly p...

Sigma Xi is a very distinguished scientific society, founded in 1886. Twenty-five years after its founding, a nice summary of its origins w...

 The full paper Sunflower heads and other parabolic spirals is to be found here . Below we quote from it some basic facts and illustrations...

I am a long-time subscriber to The skeptical inquirer , and so I read in the April/March 2016 issue the article Biological race and the prob...

Digging for authentic quotations is a frustrating business. Most of the time, the alleged source contains nothing comparable to the quote, ...

American Scientist, vol. 89, No. 5, September-October 2001, p. 459, review of The Book of Nothing: Vacuums, Voids, and the Latest Ideas abo...

The calendar mess A calendar tells you the year, the month and the day of the week, according to your culture or favourite religion. But...

From Scientific American , February 2013, p. 69 : (...) The left's war on science begins with the stats cited above: 41 percent of...

The January 2013 issue of Scientific American contains A To-Do List for Washington , by the Editors, urging dramatic action on three scien...

Islam has a problem with science. It had none with medieval science, but when science left the Dark Ages, islam stayed behind. There has b...

The October 2012 issue of Scientific American contains a Special Report on the State of the World's Science. On pages 36-37 we find th...

Religion is not fond of science, which has reduced it to some niche of human thought where it sits anxiously awaiting the next blow. There i...

Eminent scientists going off the rails is not unknown, but this 1933 Nobelist [Erwin Schrödinger] was merely making what should have been ...

Those were the days! In grandma's time, cute images such as these were standard, and no...

What not to do Want your own sundial?  Go to your local garden centre, bye one and put it in your garden. If you are of the fussy kind, yo...