It is concluded from the two experiments that marking of treads is beneficial for safely descending stairways and that the marking should be placed on the edge of all treads.
And the granite-engraved line from Carl Jung that marks one end of the passageway is like a lesson from Sandy: "Nature must not win the game, but she cannot lose".
What's more, the hairs were pristine, free of the debris and the damage from trampling that marked other stray hairs found in Restivo's van.
Think of Jimmy Carter's cardigan-clad gloom in the inflation-ridden late 1970s, or the fear of competition from Japan that marked the "jobless recovery" of the early 1990s.
In defeat there were none of the tears from Murray that marked his previous Grand Slam final loss, when Roger Federer at Wimbledon similarly came from a set down to beat him in four.
We ended near the Pacific shore, in sight of a stone obelisk from 1851 that marks the boundary between Tijuana and San Diego.
By mating this line with transgenic mouse lines in which Cre recombinase expression is driven from promoters that mark regionally-specific subsets of neural progenitors (Pax3-Cre, olig2-Cre).
They fear the same sort of backlash from the right that marked the aftermath of last year's parliamentary election.
We realise that we caused grave offence, however unintended, which detracted from a day that marks one of the greatest evils in human history.
Even without the starting quarterback Tony Romo in the lineup, they have woken from the somnolence that marked the first half of the season.
