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Barbara F. Walter joins the show.

Shane traces how cane toads conquered Australia — and how science is turning the tide.

Appraisal: Dent Hardware Toy Battleship, ca. 1920

When the British imposed new taxes, women joined the Resistance Movement by the thousands.

Appraisal: Henry George Embossed Tin Cigar Sign, ca. 1895

Brian Goldstone discusses his book "There Is No Place for Us."

Appraisal: Harold Newton Oil on Fiberboard, ca. 1975

The season of Koolawa comes to a close and shorebirds prepare for the epic journey home.

We have all heard about the increase of plastic pollution in the world and how recycling is beneficial to decreasing this waste. One way companies recycle this plastic is through something called advanced recycling or chemical recycling.

A surprising number of gifted seniors are not applying to the Ivy League universities and selective colleges they'd be sure to get into.