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What is Permafrost?

What is Permafrost? Alaska’s thawing permafrost is releasing acid and metals that turn rivers orange, changing water chemistry for dozens of miles. Permafrost is any ground that remains completely frozen—32°F (0°C) or colder—for at least two years straight. While two years is the minimum for permafrost consideration, some regions have had frozen ground for hundreds […]

Niyamgiri Hills

Niyamgiri Hills: Recent calls to revive bauxite mining in Odisha’s Niyamgiri Hills have renewed concerns among tribal groups and environmental activists over indigenous rights and ecological protection. Niyamgiri is a forested hill range of the Eastern Ghats, spread across Rayagada and Kalahandi districts of Odisha, with elevations of roughly 700–1,400 metres. The hills are home […]

Krasheninnikov Volcano : In News

Krasheninnikov Volcano: In News The Nasa-ISRO Nisar satellite recently captured detailed radar views of Russia’s Krasheninnikov volcano as lava spread across Kamchatka. Krasheninnikov Volcano is an active stratovolcano located in the Eastern Kamchatka Peninsula, Russia. The Kamchatka Peninsula lies along the Pacific “Ring of Fire.” The volcanic complex consists of two adjacent main stratovolcano cones. […]

Blazar

Blazar: Astronomers tracked some of the blazars with the highest energy radiations revealing new clues about the sources of X-ray emission in these energetic objects. Blazars are among the most energetic objects in the Universe. They typically form in young galaxies or galaxies undergoing a collision. A blazar consists of a supermassive black hole, the […]