Yes. I know. I disappeared. What happened? Term happened, is what. I’ve been flat out since the end of January and it’s only now easing off. I am aiming to spruce up the site and get going on posts over the spring/summer. I am hoping that next year will be less frantic as I will not have to write most of my lectures from scratch, or be taking a qualification at the same time…then again, maybe the apocalypse will have arrived by then (I’m feeling a tad pessimistic at the state of the world/my country this morning).

I’ll post something more substantial in the next few days. In the meantime, something to brighten your day (pun intended) – a fluorescent frog:

Fluorescent frog

Researchers have found the first fluorescent frog, the delightfully named South American polka dot tree frog. Fluorescence isn’t as common in terrestrial animals as aquatic ones, and it’s never been found in an amphibian, so this is very surprising. Moreover, the molecules responsible for the effect are quite unlike those seen in other fluorescent animals – they are in fact more similar to those seen in plants.

Fluorescence is distinct from bioluminescence, in which organisms generate their own light via chemical reactions (meaning it can happen in the dark). Fluorescence means that they absorb light at one wavelength and emit it at another, longer one. Will alien life have fluorescence? Possibly, although I think bioluminescence is more likely.

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