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Practice Listening: Multiple Choice, Single Answer
ID: #34831
Short
Insects and Streetlights
Transcript:
There's growing alarm over plunging insect populations with climate change, habitat destruction and pesticides all thought to play a role. But now, scientists say there's another culprit: artificial streetlights. Researchers from the charity Butterfly Conservation counted caterpillars at the sides of brightly lit roads. Compared with similar stretches of unlit roads, caterpillar numbers were reduced by half, suggesting streetlights can affect the abundance of insects - at least on a local scale. The scientists say with insects in trouble, we should be doing all we can to reduce negative influences. But there are practical solutions such as dimming streetlights in the early hours, installing motion sensors, or using color filters to modify the light.
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