Quirks & Quarks for Jan. 3, 2015

Squirrels bulk up while hibernating, volcanos help kill the dinosaurs, dunes roll around Titan, birds learn culture and the biggest space telescope.

Squirrels, Dinosaurs, and World's Biggest Space Telescope

Thirteen lined ground squirrel (courtesy Phil Myers)
Theme music bed copyright Raphaël Gluckstein, Creative Commons License by-nc-nd-2.0