Category Archives: Science

Example of a bad scientific poster

When I give lectures on poster design, I show examples of horrific posters I’ve found on the internet. But I fear that someday the author of a poster I’m critiquing is going to be in the audience and carrying a concealed weapon, so I thought it was time to construct my own bad poster. The result is, “Pigs in space: effect of zero gravity and ad libitum feeding on weight gain in Cavia porcellus.” A list of why the poster is awful is below the image.

I encourage teachers to print the poster and hang in a hallway a month prior to when students’ posters are due. Here’s the PDF. Ideally, also print and hang my poster that shows tips on how to make a poster. More poster tips than you really need, plus free templates, at “Designing conference posters“.

Example of bad scientific poster (copyright Colin purrington)

Why this is a terrible poster

  1. Too much text (I’ve been on mission to push for 800 words).
  2. Background image is distracting (distracts from illustrations).
  3. Text box backgrounds are dark, which makes text really hard to read.
  4. Text box backgrounds are all different colors, for no reason (distracting).
  5. Text boxes are different widths (distracting, hard to follow flow of poster).
  6. Some text boxes too wide (aim for 45-65 characters per line).
  7. Text boxes not separated from each other by pleasing “white” space.
  8. Text box edges not aligned (distracting).
  9. Text justified, which causes bad inter-word spacing. Also makes reading harder (brain uses jaggedness of left-justified text).
  10. Logos are distracting, useless, crowd title.
  11. Title word art distracting, hard to read, juvenile.
  12. Title is in all caps, which is harder to read and obscures Latin name.
  13. Title is italicized, which also obscures Latin name style conventions.
  14. Author font and color is annoying (comic sans should be reserved for comic books).
  15. Author font color is too loud relative to other text.
  16. Results are presented in sentences instead of visually with charts.
  17. Section headers have too much formatting (big font, bolded, italicized, underlined, and colored — ack!).  Choose one. [Note: I forgot to number the sections…that would have been even worse.]
  18. Terrible graphic of Guinea pig on scale. Need one of the actual set up (pigs eating while weightless, for example).
  19. Inclusion of an Abstract consumes space needlessly. Abstract section should be banned from posters. Posters ARE an abstract.
  20. Plus the science is terrible! (Bad science is correlated with bad graphic design, by the way.)

This poster was published in the journal Nature. And yes, that street number is a horrific gravity reference. Sorry.

Indestructible water molecules?

When you’re chaperoning a school trip, you notice things.  Annoying things.  Shown below is a sign at Philadelphia’s Fairmount Water Works Interpretive Center that makes the claim that all the water molecules on Earth are never, ever destroyed — they are immortal entities. If you teach biology, you’ll be instantly outraged, especially when you think of the hundreds of thousands (millions?) of kids who’ve absorbed the contents of this signage as fact.  Details below the image, but see if you can figure out the flaw before you jump.

photosynthesis, water, split, molecule, science, biology, signage, error

The sign is wrong partly because of photosynthesis, which usually involves the splitting of water molecules (to generated electrons).  That little trick evolved about 3,500,000,000 years ago, so I’d wager that most if not all the water originally present on the planet has been replaced by new molecules produced from combustion (including respiration). That’s just a guess, though…I couldn’t find a calculation on the internet.  Download this photograph and use in your lectures to introduce the ideas of photosynthesis and respiration.  If you lecture on science center signage, you can use this to highlight the value of getting a few scientists to proof the graphics.  Or a few 7th graders.