Aly's back for more plants!

As our friend Aly is fond of pointing out, plants aren't just the colorful background of Earth history, they're dynamic and influential drivers of environmental change. And few plant innovations are more famous or important than the familiar form of a tree. For hundreds of millions of years, trees have formed the basis of many of our planet's most widespread and diverse ecosystems. In this episode, Aly takes us on a tour of tree history!

In the news: more dinosaur air conditioning, trilobite lines, moth hearing, and 1,000 plant trascriptomes.

Time markers:

Check out our blog for bonus info and pictures:

We're doing another End of the Year Q&A! Submit your question here:

The Common Descent Store is open! Get merch! http://zazzle.com/common_descent

Follow and Support us on:

The Intro and Outro music is “On the Origin of Species” by Protodome.

Musical Interludes are "Professor Umlaut" by Kevin MacLeod (incompetech.com). Licensed under Creative Commons: By Attribution 3.0