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What the Heck Is This?

Hint: Today is Cinco de Mayo.

Hint 2: This is not a sponge, but having one nearby can sometimes be handy.

The image is the foam on a glass of beer. What's this got to do with science, you ask? For starters, the science behind the head on a beer is really cool — Guinness uses nitrogen to assist in making that thick, gorgeous foam. And, heck, beer may have lubricated the very rise of civilization by being the main goal of domesticating grain in the Stone Age, researchers say. It would be about 11,425 years later when beer was finally put in cans.

Not that anyone will drink their beer in moderation today, but it's worth noting that (in moderation) beer can be good for your bones.

Got a strange or interesting photo related to science, nature or technology? What the Heck, send it to meand maybe I'll use it. And you follow me on Twitteror Facebook.

(Image credit: Dreamtime)
Robert Roy Britt
Robert Roy Britt

Robert is an independent health and science journalist and writer based in Phoenix, Arizona. He is a former editor-in-chief of Live Science with over 20 years of experience as a reporter and editor. He has worked on websites such as and Tom's Guide, and is a contributor on Medium (opens in new tab), covering how we age and how to optimize the mind and body through time. He has a journalism degree from Humboldt State University in California.