Raindrops help pitcher plants trap dinner

The lower lid of the pitcher plant Nepenthes gracilis secretes nectar that attracts unsuspecting insects. In the rain, the lid becomes a spring-loaded death trap.
Ulrike Bauer/Univ. of Bristol
The lower lid of the pitcher plant Nepenthes gracilis secretes nectar that attracts unsuspecting insects. In the rain, the lid becomes a spring-loaded death trap.
Ulrike Bauer/Univ. of Bristol