Nace argued that coal usage is creating a "clear planetary crisis" but that implementing a solution is being blocked by "well-financed lobbying and PR sponsored by the coal and utility companies."

I've spent weeks and weeks on end waiting for them to make up their minds which planetary crisis is most crucial.

Molten lava accumulated until it flooded out in a planetary crisis.

Worried about a potential planetary crisis," William Broad wrote in The Times this summer, "these leaders are calling on governments and scientific groups to study exotic ways to reduce global warming.

"What the world calls sanity has led us to the present planetary crises," Simon had said, "and insanity is the only viable alternative."

Worried about a potential planetary crisis, these leaders are calling on governments and scientific groups to study exotic ways to reduce global warming, seeing them as possible fallback positions if the planet eventually needs a dose of emergency cooling.

Clusters of natural disasters, patterns of apocalyptic planetary crises, or "Earth Changes" (tornadoes, hurricanes, earthquakes, blizzards, solar storms, severe thunderstorms, floods, tsunamis).

There were lifeboats aground on Xosa II, for emergency communication, and if a lifeboat didn't bring news of a planetary crisis, no crisis would be considered to exist.

Abruptly there was a planetary crisis, for both these maneuvers were technically acts of war.

"I have a planetary crisis to tend to, the Federation can wait."