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Why is the Sky Blue? Or Better Yet, Why is the Ocean Blue?

31 Jan 2020

The sky is blue due to a phenomenon called Raleigh scattering. This scattering refers to the scattering of electromagnetic radiation (of which light is a form) by particles of a much smaller...

What is "Hormesis"?

24 Jan 2020

Just about every textbook of toxicology pays homage to Paracelsus, the sixteenth century alchemist. Why? Because he introduced the idea that 鈥渙nly the dose makes the poison.鈥 It makes no sense to...

Before electricity, streets were filled with gas lights

17 Dec 2019

A long, long time ago, before electricity, fire was the only weapon against darkness. Ancient civilizations made use of torches but by 4500 B.C. oil lamps made out of shells or hollow rocks were in...

Shaking a Champagne Bottle

17 Dec 2019

People readily understand that solids can dissolve in a liquid. Salt or sugar dissolve in water and the warmer the water, the faster the rate of dissolution. We learn this in elementary school. But...

The Seen and Unseen Consequences of Albinism

13 Dec 2019

Today I learned two things. First, that we apparently have an albino squirrel on our campus. Second, that seeing an albino squirrel before a test is good luck....

What Accounts for Variations in Height?

22 Nov 2019

It鈥檚 nice to be tall. Tall people are more likely to get hired, get promoted and are paid better than their shorter counterparts. They can reach things from high shelves, have unobstructed views at...

Why Oh Why Do Scientists Keep Changing Their Minds?

11 Oct 2019

The report of 鈥渁 new study鈥 in the media is often followed by a comment on social media pointing out that scientists can鈥檛 seem to agree on anything. One week, meat consumption should be reduced;...

Should I Attach a Bell to My Cat鈥檚 Collar?

26 Sep 2019

鈥婻eprinted with the permission of Animal Wellness Magazine.聽 Consider these pros and cons before attaching a bell to your cat鈥檚 collar.

Pen and Paper Versus Laptop: Is There a Clear Winner in the Note-Taking Olympics?

20 Sep 2019

Is the pen really mightier than the keyboard? I know a professor who begins each semester by pointing out that, according to聽this one study, students perform better on tests when their notes were...

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