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SUNDAY SHOW & TELL
vol.90

The Fortingall Yew, a 5,000-year-old tree in Scotland, is changing from male to female. This year, for the first time, it produced berries instead of pollen. How is that possible? You'll have to read the story to find out!

THE SEX-CHANGING YEW (short article)

Equally amazing is Red Bull's latest video with BMX cyclist Kriss Kyle. Travel deep into a series of optical illusions that are certain to boggle your mind.

KALEIDOSCOPE (video)

As it turns out, humans have underestimated trees completely. Researches have found some amazing specimens among the estimated three trillion that populate the planet, and have noticed what some describe as signs of intelligent life. They argue that coming to a deeper understanding of their ways may even help us solve some of the toughest problems we currently face. A great read!

HUMANS UNDERESTIMATE TREES (article)

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SUNDAY SHOW & TELL
vol.78

Have you ever wondered what keeps a bicycle upright, or how a riderless bike can travel a solid distance without falling? Some feel they understand the basic physics involved, but the true answers might surprise you. Take a minute to learn something new.

THE PHYSICS OF A BICYCLE (video)

Ten years ago, Rob McBride, an IT specialist from Shropshire, England, was saved by a newfound fascination with trees. Now, he returns the favor by participating in Ancient Tree Hunt, an effort to catalogue and preserve the oldest trees in the UK. Read his inspiring story below.

TREES SAVE A MAN, MAN SAVES THE TREES (photo essay)

The future has arrived! Imagine never again having a flat tire, or needing to change one. The Energy Return Wheel, an airless prototype, offers that possibility and so much more. Check it out!

ENERGY RETURN WHEEL (article)