He said the current biology-chemistry-physics sequence dates from the late 19th century, when "we didn't know enough" and biology was considered a "descriptive" subject.
But both are better seen as two events in a sequence dating back to the Monterrey conference and stretching ahead to another big UN conference in September.
A seriation technique, called sequence dating, based on shared typological features, enabled Sir Flinders Petrie to establish the temporal order of a large number of Egyptian graves.
That sequence dates back to United's only previous visit to San Mamés, in January 1957, when the Busby Babes lost 5-3 in the first leg of their European Cup quarter-final but reached the last four of the competition after winning 3-0 in the second leg, which was played at Maine Road because Old Trafford did not have floodlights.
It was India's first away victory in 16 Tests, a sequence dating back to 2011, and their first at Lord's since 1986.
Vale Boi has a long sequence dated to between c. 32 and 7 ka cal BP with well-preserved bone and shell assemblages from early Gravettian to Neolithic times.
The upper part of the sequence, dating between c. 5700 and 4650 cal yr BP records a significant environmental instability towards dryer climatic conditions, consistent with the end of the African Humid Period.
We then estimated evolutionary rates and divergence dates from an alignment of genome sequence dates with the isolates' recovery dates, by using BEAST V.1.7.4 (http://beast.bio.ed.ac.uk; see online supplementary methods).
A number of our sequences date back 700 million years or more, when we lived a tidy, unicellular life, while other chemical phrases bespeak our membership in the fraternity of apes, and may explain how we came to be human.
Mutation frequencies in complete mitochondrial genome sequences date the colonization age to approximately 400 years ago.
