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Why there’s more lightning over land than sea
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via Metafilter
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“Further global warming of 1 °C defines a critical threshold. Beyond that we will likely see changes that make Earth a different planet than the one we know.”
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‘To crawl vertically and cling upside down, most spiders use minute claws and pads on their feet. These work on rough surfaces, but may fail on smooth or dirty ones. While small spiders can survive long falls, for a heavy tarantula a slip could be fatal.’
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