• picture
  • picture
  • picture
  • picture
Public Radio's Environmental News Magazine (follow us on Google News)


Air Date: Week of

The planet's natural calendar, with its cycles of hibernation, sprouting, fading and rebirth, can seem remote in our techno-filled lives. Tune in to the remedy: ECOtime. This week, we hear about eye-shine.



GELLERMEN: When it comes to nature - the eyes have it, as the folks at the ECOcalendar project remind us in this audio snapshot they call ECOtime.

HARDMAN: Eye Shine. We humans are diurnal, meaning we're daylight animals. We don't do well when we're in the dark. But others see just fine. Plenty of animals, including many fellow mammals, lions and tigers, and cats and dogs, have eyes that are able to reinforce small amounts of light.

Light goes in their eyes, and it hits the receptors. Then it bounces off a mirror-like membrane, called the tapetum lucidum, to hit the receptors again, so they see the light twice.

You've probably seen the effects of this reflector, at night, when light hits their eyes, it shoots back brightly. It's an eerie sight, partially because many of the animals that have the tapetum lucidum, are hunters.


GELLERMAN: That's Chris Hardman with ECOtime, part of the ECOcalendar project. For more, check our website loe.org.



Living on Earth wants to hear from you!

Living on Earth
62 Calef Highway, Suite 212
Lee, NH 03861
Telephone: 617-287-4121
E-mail: comments@loe.org

Newsletter [Click here]

Donate to Living on Earth!
Living on Earth is an independent media program and relies entirely on contributions from listeners and institutions supporting public service. Please donate now to preserve an independent environmental voice.

Living on Earth offers a weekly delivery of the show's rundown to your mailbox. Sign up for our newsletter today!

Sailors For The Sea: Be the change you want to sea.

Creating positive outcomes for future generations.

Innovating to make the world a better, more sustainable place to live. Listen to the race to 9 billion

The Grantham Foundation for the Protection of the Environment: Committed to protecting and improving the health of the global environment.

Contribute to Living on Earth and receive, as our gift to you, an archival print of one of Mark Seth Lender's extraordinary wildlife photographs. Follow the link to see Mark's current collection of photographs.

Buy a signed copy of Mark Seth Lender's book Smeagull the Seagull & support Living on Earth