"It's funny," she said, "what triggered the final blow up was an editing job I did on an article for the school publication.

When one tiny organism decides it is time for the reproductive cycle to begin, it triggers a mechanism through which hundreds of miles of coral reef can change colour within hours.

In my higher classes, one enterprising fellow used to buy the whole newspaper and bring it to class, inevitably triggering a mad scramble for the eight pages.

The bulls argued that all those borrowed shares had to be bought back sooner or later and that the upcoming positive mining audit would trigger a massive short squeeze that would quickly put the price over $20.