The balance of nature? Bah humbug. There isn't any, the late ecologist William Drury asserted. In nature, the steady state is constant change. Listen as I contemplate the biological pendulum that for most things swings from abundance to scarcity and back again.

Of all the unique, curious creature in the world, none is curiouser than the reptile known as the tuatara. It lives only in New Zealand. It is neither crocodile nor turtle nor snake nor lizard.

We all have our passions and compulsions. One of mine is hunting for salamanders. When I catch them, I let them go. The fun isn't in the possessing, it's in the chase. Will you join me?

First one at a time, then later by the truckload, leaves turn color. At first they signal the coming end of summer, then the arrival of fall, then turn our forests into one vast Jackson Pollack painting.

While I watch nature videos with pleasure, especially if they're narrated by David Attenborough, and while I enjoy a stroll through a zoo now and again, it's always been clear to me that there's nothing more satisfying and fun

Weird living things you may never have heard of live deep in the oceans and in hot pools at Yellowstone. They live in your intestines and toilet tank, too. You gotta love them, for without them, we'd be nowhere.

When nights yields to day and day succumbs to darkness, wild beasts come out to fly and prowl. Scientists call them crepuscular. Listen and meet dusk specialists here.

According to the calendar, one day it's summer and the next it's fall. Nature marks the change of the season a little differently.

I'd forgive anyone for thinking I was pulling a leg when telling them that some ants round up aphids on plant stems and tend them like dairy farmers care for cows.