That means they can see directly ahead while swimming and can accurately judge distance, particularly to any prey they hunt.

BBC: Earth News - Hammerhead shark mystery solved

In the second test Pickens had to judge the length of lines and the relative distance between lines and dots.

FORBES: Inside T. Boone Pickens' Brain

As a devotee of marathon races, James Wood, a wiry, 56 year-old former Supreme Court judge, was well suited to staying the distance with an inquiry that many in the police force hoped would fizzle out soon after it began in November 1994.

ECONOMIST: Australia

But the IRS says the "and" in the 1965 rewrite of the statute can be read as an "or, " which renders the law ambiguous, thus requiring a judge to discern Congress' intent, which was to tax long-distance calls.

FORBES: Phony Tax

That's for others to judge - but the bigger picture for the five Lib Dem AMs is whether their five year push to distance themselves from some of the unpopular decisions of the UK coalition is enough to prevent their vote falling even further in 2016.

BBC: State of Play 3 - The Lib Dems