If planting more trees can replenish forests and remove carbon dioxide from the atmosphere, then could we also repopulate the Arctic with ice?
That's a question posed by a team of Indonesian designers with an eye-catching response to the climate crisis: iceberg-making submarines.

The idea, recently named runner-up in an international design competition appealing for radical approaches to sustainability, is the latest in a series of new proposals for "refreezing" the Earth's poles -- from sprinkling them with artificial sand to blasting seawater into the sky to brighten the clouds.


If that's the best these thinkers can come up with, it's time to go back to school.