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🌿 Environment & Ecology UPSC 10 Nov 2026 1 min read

Global Study Finds Noise Pollution Altering Traits in 80% of Wildlife Studied

Quiz (3) Mains (1) Comments

Key Facts

A study in the journal Science, pooling over 200 experiments on 177 species across six continents, found that noise from traffic, industry, shipping and sonar altered traits in 80% of the animals studied. Mortality rose by 138%, and predators caught 25% less prey despite hunting harder when exposed to noise. Noise is measured in decibels (dB) on a logarithmic scale; in India it is regulated under the Noise Pollution (Regulation and Control) Rules, 2000, framed under the Environment (Protection) Act, 1986.

GK Context

The Environment (Protection) Act, 1986 is an umbrella law enacted after the Bhopal gas tragedy, empowering the Central Government to take measures to protect and improve the environment. The Noise Pollution (Regulation and Control) Rules, 2000 set ambient noise standards for industrial, commercial, residential and silence zones, and regulate the use of loudspeakers and firecrackers. A decibel scale is logarithmic, so a small rise in dB represents a large rise in actual sound energy.

Test yourself

Mains Questions (1)

1 10 Marks 150 Words

Noise pollution is often overlooked compared to air and water pollution. Discuss its ecological impact and the adequacy of India's regulatory framework.

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CurrentIQ is India’s dedicated digital learning ecosystem crafted specifically for aspirants targeting competitive examinations including UPSC Civil Services (IAS/IPS), TNPSC Group 1, Group 2, Group 4, SSC CGL/CHSL, Banking (IBPS/SBI PO & Clerk), and State PSCs.

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