But there is still the problem of managing the formation and dispersal of platoons as cars join and leave, notes Dr Hedrick.

ECONOMIST: MONITOR

In early February, the State Department announced the formation of a task force to deal with the problem of Iraqi refugees.

NEWYORKER: Betrayed

He wants to see an immediate reduction in pesticide use until the effects are better understood, and is pressing for the formation of a European Union environment unit to study the problem.

BBC: By BBC News Online's Environment Correspondent Alex Kirby

The evolution of woody plants has solved the problem of capture (photosynthesis) and storage (formation of durable cells) at minimal cost.

ECONOMIST: The benefits of CCS

The problem with this is, as often happens in a flag formation, the second decline will result in lower lows.

FORBES: Using Fibonacci to Trade Flag Patterns

With its negligible atmosphere, this wouldn't be a problem on Europa, suggesting the moon could have more or less ideal conditions for the formation of these icy blades.

BBC: Ice blades threaten Europa landing