Bare by Helen Dallat and Daisy Gould. After this, watch more videos about seasons…

This clip from the Eden Channel shares two musical traditions of the BaAka Forest People: polyphonic singing — when two or more voices join together with independent melodies at the same time — and, dressed in a costume of leaves, a theatrical ceremony that features dancing and joking as forest spirits.

In this Science on the SPOT: Preserving the Forest of the Sea, watch Kathy Ann Miller, PhD, curator of the University Herbarium at the University of California - Berkeley, as she shares the wide variety of seaweeds in the collection.

We love when someone gives a personalized video tour of their work, especially when it mixes nature, science and beautiful, art-like specimens all together. Kathy and her team are digitizing samples of 80,000 kinds of seaweed collected from the North American west coast, so that they can be shared online with researchers from around the globe. You can read more about the project here.

PS. Need a DNA primer? Watch this vid.

From KQEDscience

Professor Brian Cox explains how Monarch Butterflies navigate by “monitoring the position of the sun, and compensating for its location in the sky using their internal timekeeping mechanism… even when it’s cloudy.” This is an episode 5 preview of the BBC’s Wonders of Life. Full screen this.

With a cameo by Forest Scientist Stephen Sillett, watch this behind the scenes video about photographing the world’s second-largest known tree, 3,000+ year old President, in Sequoia National Park.

The resulting image, made from 126 images by photographer Michael “Nick” Nichols, is featured in National Geographic’s December 2012 issue.