Sebastião Salgado’s stunning shots of the world’s icy regions

Sebastião Salgado’s photo of the South Sandwich Islands, taken in 2009 Sebastião Salgado Sebastião Salgado became famous for his portraits of humans struggling to survive in an unjust and violent world. He took astonishing photographs of the attempted assassination of US President Ronald Reagan, covered conflicts in Africa, the Balkans and the Middle East, and…

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What were the first animals? The fierce sponge–jelly battle that just won’t end

Which animals came first? For more than a century, most evidence suggested that sponges, immobile filter-feeders that lack muscles, neurons and other specialized tissues, were the first animal lineages to emerge. Then, in 2008, a genomic study pointed to a head-scratching rival: dazzling, translucent predators called comb jellies, or ctenophores, with nerves, muscles and other…

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How new AI technology is helping detect and prevent wildfires

Wildfire prevention has traditionally relied on blunt tools, such as rigid inspection cycles and emergency power shutoffs. Now a new generation of technology start-ups is pitching a more targeted approach: using artificial intelligence to help utility companies decide what to inspect—and where to intervene—before a spark becomes a blaze. The stakes are rising. In 2025…

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