Welcome to today’s Sunday Science, with some weird and wonderful animals, some human quirks, and future life on the oceans..
How did the weevil get its shell? Well, they have bacterial symbionts who live inside them with severely reduced genomes. These bacteria do not much more than churn out the amino acid tyrosine, needed to harden the shells. I love how nature is so weird sometimes. Link is to the full scientific paper, so fairly technical.
A fascinating account of the changes in the onset and duration of puberty, which has changed significantly over the years.
Seasteading, which means living on permanent floating artificial habitats, outside the jurisdiction of any government, seems to be taking a step forward. This long thoughtful piece examines the progress and implications of what was, until now, an idea confined to science fiction and libertarian dreamers.
And finally…did you ever collect tadpoles as a child and try and grow them to frogs? Well, toad tadpoles are less cute than they look: they contain potent heart poisons. The researchers thought this was to ward off competition from frogs, but it seems actually to be do with each other – the more toad tadpoles there are, the more toxic they get.
Credit: This week’s featured image via Nature, by Bert Willaert/NPL.