
Tiny Bacteria's Big Challenge to Darwin
Bacteria (prokaryotes) are found everywhere and are a critical foundation of the earth's ecosystem. The prokaryotes are designed to be saprotrophs or "decomposers," breaking down wastes and organic material so that chemical components such as nitrogen can be recycled.

Cosmology's Error Bars
It wouldn't make much sense to brag about knowing the diameter of a steering wheel to five decimal places on a car headed the wrong way with an engine about to blow, would it? Neither is it sensible to talk of "precision cosmology" in a day when major upheavals are being seriously considered by astronomers.

Marketing the Navajo Sandstone
A TV ad several decades ago stated with an air of authority that "dogs love cheese." No reports were cited and no canine polls performed, yet marketers hoped its mere repetition would drive the public to buy the cheese-flavored snack for their dogs, regardless of whether the claim was true.









