"We measure the ecological load an area can take and we offer licences only where were convinced there is a proper balance between effects of fish farming and the ability of local environment to absorb the effects of farming, " says Stewart Stevenson the Scottish Minister for Environment and Climate Change.

BBC: How can Scotland cope with China's salmon demands?

The score represents how well optimized the page is for speed, but does NOT measure the actual load time. (The real load time, of course, is what users experience.) So, slow servers or connections or content from other sites (like third party ads or widgets) can kill performance even on a site that gets a great score.

FORBES: Don't Let a Slow Website Kill Your Bottom Line

Edwin Bernard, editor of AIDS Treatment Update, said it was known that CD4 decline varied enormously between people with a similar viral load, and that treatment guidelines had begun to play down the importance of the measure as a diagnostic tool.

BBC: Cell infected with HIV