The statement that would discredit Pott's objectivity if it was included in the article is I believe the human race is capable of great things.
That statement gives shows his opinion, making it subjective.
The article Rick Potts wrote in 1998 is a credible source of information because it is objective, reviewed by other scientists and written by the director of the Smithsonian's Human Origin Program.
The higher temperature would be 100c since when you use the fromulas to convert them the other two are lower.
100F = 37.8 C and 310.7K.
100C = 237.6F and 373K.
100K = -173C and -253.8F
A cladogram is a branching diagram that shows the cladistic relationship between a number species. It comes from the greek clados meaning branch and gramma meaning character. It is not to be confused with an evolutionary tree since it does not show the relationship between ancestors and descendants plus it also lacks the ability to show how they have changed over time. The major components of a cladogram are the tip (the start of the lineage), root (the end of the lineage) and node (where two or more lineages combine).