A handful of companies are pursuing airborne seeding, but there’s little evidence so far that the tactic will succeed.
Last year’s Castle Fire in California’s Sierra Nevada is estimated to have killed more than 10 percent of the world’s giant sequoias, the tallest trees on earth. Sequoias can live through many fires over life spans that last thousands of years; their bark is fire-resistant and they rely on fire to reproduce. But as climate change intensifies, wildfires are growing larger and more intense. According to state officials, six of the seven largest wildfires in
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