It Invites A Search For Ultimate Causes:

The Anasazi Did Manage To Construct In Stone The Largest And Tallest Buildings Erected In North America Until The Chicago Steel Girder Skyscrapers Of The 1880s.

I've Always Been Interested In A Lot Of Things, And A Lot Of Things At The Same Time, And I Always Tried To Explain Them To Myself. I Ask A Lot Of Questions.

In Contrast [to Trees And Fish], Oil, Metals, And Coal Are Not Renewable; They Don't Reproduce, Sprout, Or Have Sex To Produce Baby Oil Droplets Or Coal Nuggets.

Science Is Often Misrepresented As "the Body Of Knowledge Acquired By Performing Replicated Controlled Experiments In The Laboratory." Actually, Science Is Something Broader: The Acquisition Of Reliable Knowledge About The World.

Bird Taxonomy Is A Difficult Field Because Of The Severe Anatomical Constraints Imposed By Flight. There Are Only So Many Ways To Design A Bird Capable, Say, Of Catching Insects In Mid-air, With The Result That Birds Of Similar Habitats Tend To Have Very Similar Anatomies, Whatever Their Ancestry. For Example, American Vultures Look And Behave Much Like Old World Vultures, But Biologists Have Come To Realize That The Former Are Related To Storks, The Latter To Hawks, And That Their Resemblances Result From Their Common Lifestyle.