How dividing cells avoid setting off false virus alarms

One feature of cell division has long puzzled scientists. The nucleus briefly disappears, leaving the cell's DNA exposed. Normally, bare DNA indicates a viral infection and triggers enzymatic alarms that alert the immune ...

Scientists discover a social cue of safety

For schools of fish, herds of antelope, and even human societies, inherent safety is one of many advantages of cooperative groups. Surrounded by their peers, individuals can lower their vigilance and calmly engage in other ...

Self-powered alarm fights forest fires, monitors environment

Smokey the Bear says that only you can prevent wildfires, but what if Smokey had a high-tech backup? In a new study, a team of Michigan State University scientists designed and fabricated a remote forest fire detection and ...

The smell of fear warns other voles

Many encounters between predators and prey take place in dense vegetation. Predators lurk and wait for the best moment to attack, but are seldom visible. For a prey animal, the smell of a predator is one of many signals for ...

Honeyeaters send lightning-fast warning signals

New Holland honeyeaters are experts at sounding the alarm when there's danger, according to new research from biologists at The Australian National University (ANU) and the University of Cambridge.

When warblers warn of cowbirds, blackbirds get the message

This is the story of three bird species and how they interact. The brown-headed cowbird plays the role of outlaw: It lays its eggs in other birds' nests and lets them raise its young—often at the expense of the host's nestlings. ...

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