Brainy Stuff starts at 21:47  and Behind the Redwood Curtain begins at 38.:36.
Catherine shares what she's learned from her knitting of the cowel she completed and her adventures with the Meadowlark Shibori Jacket.  Margaret talks about a Knit-a-long she began many years ago sponsored by Webs Yarn Company that featured tree motifs from Barbara Walker
Today's question is how does Knitting qualifies as an engaged mental activity.   The answer lies in the various brain lobes and brain waves and the location and the wave activity changes depending on what you do including knitting, watching TV, reading or listening to audio books. 
In Behind the Redwood Curtain, Catherine talks about the Arts Alive events in Arcata and Eureka, CA.
The knitting tip this episode is from Josh Bennet who says that if you want long lasting garments, that seaming the pieces is your best bet and that 1x1 ribbing is more durable than other kinds