Ben Priestley, Unison national officer for police and justice, said vetting practices needed to be resolved for senior officers.

BBC: David Ainsworth

But it added that "technical issues" still needed to be resolved.

BBC: Troika: Greece makes 'progress' but 'issues' remain

In his recent ruling on the other issues, Giardino said questions of fact and credibility about the company's ads still needed to be resolved before he could rule.

WSJ: NY judge says rafter broke guide licensing laws

When I talked recently (via email) with ex-BMW chief designer Chris Bangle he was doubtful about driverless vehicles simply because the liability issues it created needed to be resolved before the cars could go on sale.

FORBES: Google On Earnings: Our Future Lies in Hardware Too

Sources of doubt that have seemed plausible in the past, such as a mismatch between temperatures measured by satellites and temperatures measured at the surface, and doubts about the additional warming that can be put down to water vapour, have been in large part resolved, though more work is needed.

ECONOMIST: Climate science