As head gaskets became able to handle the heat and pressure necessary, the technique went out of use.

But some scientists say there is a limit to how far these techniques can go.

Not happy with the result, he said, when he next worked in southern Sudan, "technique went straight out of the window."

Mostly a stalling technique in hopes the whole thing would go away.

Her technique went beyond that of reporters who use "police sources" for their information.

Without an artist's hand behind it, these techniques only go so far.

When it comes to separating immigrants from their money, few techniques have gone untested.

But critics argued that his technique went far beyond the intent of the ruling.

This technique goes back to at least 1995.

"Whether there is or isn't one, this technique is going to be used on other galaxies," she said.