As they make clear themselves, the researchers also haven't any idea what the mechanism is behind the link they've found.

BBC: Warm, wet - and warring?

If the comments themselves don't make this clear, then e-mail the writers to find out.

CNN: Don't get taken at Web auctions

"Let's just make it real clear: Dead bodies in and of themselves -- while they are mental health issues and tragic -- they are not a public health issue from an infectious disease standpoint at all, " Guarisco said.

CNN: Experts: Disease outbreaks a real threat

But it is also clear that labour-market policies themselves can make a huge difference.

ECONOMIST: Unemployment in the West

We make this clear in our songs, so that youths can prepare themselves for the eventualities of death.

BBC: NEWS | Africa | Islamic rappers storm Senegal charts

We should set rules about technology use, make sure kids are clear about how their online actions might affect themselves or others, set good examples for them, and even let them make and learn from their mistakes.

FORBES: Bad Apple? Who's To Blame For Kids' In-Game Shopping Sprees?

So again, this is an opportunity for senators on the Hill to make their position clear, and others who have an interest in this should express themselves as well.

WHITEHOUSE: Press Briefing

But when it became clear that Sven's men were not going to make life easy for themselves, the nagging fear of a Euro 2000 repeat began to loom large.

BBC: England fans suffer in ignorance

We want information to be clear and easy to understand, so that consumers can make wise financial decisions for themselves and their families.

WHITEHOUSE: Press Briefing