Climate records unearthed from Tamil Nadu lake can enable conservation and biodiversity strategies

• A DST-backed multiproxy palaeoclimate study of Kondagai Lake in Sivaganga district, Tamil Nadu has reconstructed 4,500 years of Northeast Monsoon (NEM) behaviour in peninsular India.
• The lake lies adjacent to the Keeladi archaeological site (Sangam-era urban settlement, dated to ~6th century BCE or earlier), linking palaeoclimate to ancient human habitation.
• Relevance: GS-I (Indian Heritage, Geography — monsoon), GS-III (Environment, Biodiversity, Disaster Management — droughts/floods).