Spider which uses spring trap to capture prey discovered in Australia

What we know

Researchers say their hunting method - which allows them to prey on dangerous ants - is unprecedented

Why this counts

What makes this worth tracking, according to BBC, is the chain of decisions it may trigger.

What precedes this

BBC notes that this did not emerge in isolation; pressures have been building around spider.

Where this fits in Signal Ledger

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The lens

Signal Ledger reads this through the lens of spider, uses, spring, trap, capture: Researchers say their hunting method - which allows them to prey on dangerous ants - is unprecedented.