Every time I write about particle physics, I encounter a moment of uncertainty about a quantity that, at first glance, ought to be clear. How many kinds of elementary particles should I say there are?

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Arthur Gies Arthur Gies is an editor for Wirecutter's tech coverage. He's ...

The University of Alberta Hospital is ushering in a new era of X-ray imaging with the installation of Alberta’s first photon-counting CT scanner. The new device has been installed in the Suncor Energy ...