Participles, conveying urgency?

The first two and last two panels of today's Doonesbury: The idea that short phrases convey urgency is a well-established principle of writing advice, e.g. here and here. But it's not obvious to me that either in headlines or in broadcast news, the use of present participles rather than tensed verbs is generally the more urgent-seeming … Continue reading Participles, conveying urgency?