Half-remembered board game ID question: In the mid-'90s, my family was visiting some friends who owned a strange board game involving evolution, species, a hexagonal grid, and lots and lots of dice. What was it? [more inside]
posted by Johnny Assay on May 23, 2011 - 7 answers

Is there a website out there where I can enter the names of two species and be given the approximate date when their last common ancestor lived? Bonus points if it tells me what sort of species this ancestor probably was, and for showing me the part of the tree of life relating to these species. Thanks!
posted by chorltonmeateater on Sep 10, 2010 - 6 answers

How do species come to have different numbers of chromosomes? [more inside]
posted by luftmensch on Jan 20, 2006 - 14 answers

Is there a limit to scientific advancement? If there is only a certain number of elements to the universe, will there reach a technology plateau? [more inside]
posted by the fire you left me on Jul 17, 2004 - 24 answers

It's easy to tell when a species has gone extinct. How do you tell when a new species has evolved? Are there any criteria besides not being able to mate with the former species?
posted by ph00dz on Mar 2, 2004 - 24 answers