Suddenly he understood that the biological world wasn't static.

These paths or, "chreods" appear to be followed automatically in the biological world.

Seeds and pollen in the stomach contents would tell much about the biological world that existed thousands of years ago.

Then what of all the imperfections we see in the biological world?

A number of structures in the biological world are described as trident in appearance.

Pectines are comb-like structures, widely found in the biological world.

Silicification in and by cells has been common in the biological world for well over a billion years.

Little attention has been given to the interface between the biological world and traditional engineering in the past.

In the biological world we have the genus for the class and the species for the variations.

If only we can find something in the biological world that Darwin cannot explain, perhaps life will have a meaning after all.