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Animals

This tool-using cow defies expectations for bovine braininess

Veronika the cow uses a brush as a tool to scratch herself, revealing rare problem-solving skills and expanding what we know of tool use in animals.

Animals

This fish may play a hole in its head like a drum

The rockhead poacher is a little fish with a big pit in its head. The divot may be like a drum, making sound that rises above a chaotic, nearshore din.

Earth

A long-lost tectonic fragment may be shaking Northern California

Seismic tremors reveal a shallow fragment of an ancient tectonic plate beneath Northern California, helping explain damaging earthquakes near the surface.