The Swiss Renaissance physician, alchemist and founder of toxicology Philippus Aureolus Theophrastus Bombastus (!) von Hohenheim, better known as Paracelsus (Figure 1), said it well: “All substances are poisons; there is none that is not a poison. The right dose differentiates a poison and a remedy.” Or more compactly, “the dose makes the poison.” Continue reading
Did you know that under the right conditions, bacteria can divide every 20 minutes?1 (That’s how bacteria reproduce – one cell splits into two.) That means that 10 bacterial cells can produce 2,621,440 bacteria after only 6 hours! No wonder you can get sick so quickly after eating food contaminated with bacteria. Figure 1 below … Continue reading
How do we stay safe in a world full of chemicals? Everywhere we look, we find chemistry – both natural and synthetic – at work in the air we breathe, the ground we stand on, and in the water we drink. Internally, every cell in our body uses chemistry in order to function and communicate. … Continue reading
What happens to cells when they come into contact with nanoparticles? Researchers in the Center for Sustainable Nanotechnology are trying to answer this question in a lot of different ways. The effect of exposing organisms to nanoparticles is not as simple as life or death. In one recent study1 we explored the molecular changes that … Continue reading
This post is the first in what we hope will be an ongoing series of public-friendly summaries describing research articles that have been published by members of the Center for Sustainable Nanotechnology. Jared Bozich, a doctoral student at the University of Wisconsin – Milwaukee, was the first author on this paper and was eager to take on … Continue reading
Nanoparticles and the Environment Series, Part II (click here for Part I) Let’s dive in to a real-world nanotechnology problem raised by one of our readers: should waste composed of nanoparticles, let’s call it “nanowaste”, be disposed of differently than regular waste? There are many types of nanowaste that we could discuss, but today we’ll … Continue reading
Nanoparticles and the Environment Series, Part I (click here for part II) More than a year ago on this site, I talked to you about how nanoparticles were already all around us, and have been for most of human history. That day, I was hoping to show you that while nanotechnology may sound cool and … Continue reading
