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Drones validate walrus counts in satellite images from space

In the first successful attempt to calibrate walrus counts from satellite imagery, scientists used drones to validate animal counts in Svalbard, Norway. On this International Day for Biological Diversity, the researchers ...

A new and better way to detect media censorship

Worldwide news media are facing increasing pressure from autocrats to report favorably about their leaders and party politics, so political scientists have launched a new computational method that can detect such media censorship ...

Kenya floods prompt calls for warning systems

Kenya's worst flooding in decades highlights the urgent need for more robust mitigation efforts, including flood risk maps and early warning systems, say climate scientists.