SciTech Express

Climate Risk Index (CRI) 2025: India Among the Most Affected Nations Introduction to Climate Risk Index (CRI) The Climate Risk Index (CRI) 2025 is a globally recognized measure that ranks countries based on their vulnerability to extreme weather events over a defined period. This index assesses the impact of climate-related disasters such as floods, storms, heatwaves, and droughts. It serves as a critical indicator of how climate change affects human lives and economies across different regions. The CRI 2025 , published by German-watch , highlights India's growing vulnerability to climate-related disasters. India has been ranked as the 6th most affected country during 1993-2022 , highlighting the increasing frequency and severity of extreme weather events. Key Findings of CRI 2025 India's Climate Vulnerability India faced over 400 extreme weather events between 1993 and 2022 . The economic losses due to these disasters exceeded USD 180 billion . The death toll from climate-r...

Invasive Fish Species: Mosquito Control or Ecological Threat? The National Green Tribunal (NGT) has sought a response from the Central Government regarding the use of two invasive fish species — Gambusia affinis and Poecilia reticulata —as biological agents for mosquito control in India. Common Characteristics of Both Species IUCN Status : Least Concern Environmental Tolerance : Survive in brackish water , high salinity, and extreme temperatures. Gambusia Affinis (Western Mosquitofish) Native Range : Mississippi River Basin , USA (from Indiana to the Gulf of Mexico). Habitat : Found in freshwater bodies , especially stagnant ponds and slow-moving streams . Key Characteristics : Can survive in low oxygen environments. Viviparous : Give birth to live young instead of laying eggs. Aggressive nature : Preys on native fish and disrupts local biodiversity. Invasive Impact : Listed among the 100 worst invasive species (IUCN). Outcompetes native fish species and alters ecosystems . Poec...