In Copernicus’ day, the Earth was thought to be at the bottom of the universe, the “sump” where all the filth collected.
I have been writing a series of articles on alleged Ediacaran animals that have been postulated as precursors of the Cambrian explosion.
The series, as hosted originally by Carl Sagan and now by Neil deGrasse Tyson, has two notable priorities.
The smaller a design, the harder it may be to detect. But miniature designs can inspire awe more than large ones.
A few days ago a sensational new paleontological discovery made headlines around the globe.