Quirks & Quarks for June 14, 2014
This week, we find out how Cambrian fish started to evolve new jaws; how motherhood is tough, especially for sea otters; how you can put a star inside a star; how fossil plants point to forest fires during the dinosaur era; and we mix a Cosmic Cocktail with dark matter.

This week, we find out how Cambrian fish started to evolve new jaws; how motherhood is tough, especially for sea otters; how you can put a star inside a star; how fossil plants point to forest fires during the dinosaur era; and we mix a Cosmic Cocktail with dark matter.
Theme music bed copyright Raphaël Gluckstein, Creative Commons License by-nc-nd-2.0