News publications across the world have been reporting that the magnetic north pole is drifting fast from the Canadian Arctic and towards Russia. What is this phenomenon about? Two north poles The Earth has two pairs of north and south poles. The geographic poles are defined by the axis around which the planet rotates, and … Continued
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A record-breaking cold wave has swept through the US Midwest, with 22 states hitting sub-zero temperatures. Among cities, Chicago dropped to a low of -30°C, slightly above the city’s lowest-ever reading of -32°C from January 1985. Minneapolis recorded 32°C and Sioux Falls (South Dakota) -31°C. The extreme cold has been caused by a blast of … Continued
What has happened? A tsunami struck Indonesia’s Sunda Strait, the expanse between the islands of Java and Sumatra, on the night of December 22, local time. The Sunda Strait connects the Indian Ocean to the Java Sea. The tsunami occurred due to underwater landslide which was further triggered by volcanic activity at the site Anak … Continued
Extent of damage caused It is now becoming clear that Cyclone Gaja is a major disaster, and its economic impact in Tamil Nadu is comparable to that of the tsunami of 2004. The devastation suffered by tens of thousands of people in several districts of the State has been severe, going well beyond the annual … Continued
The Regional Integrated Multi-Hazard Early Warning System (RIMES) for Africa and Asia, a 45-nation international organisation on disaster warning, has termed ‘Titli’, the severe cyclonic storm that devastated Odisha in October, as ‘rarest cyclone’. Why Titli has been regarded rarest of rare? “More than 200 years of cyclone track history in the Odisha coast reveals … Continued
The crop has often helped shape poll outcomes in Malwa, which accounts for more than half the state’s production. Once thriving, soyabean has suffered falling prices in the last few years. History of soyabean in India The leguminous oilseed was hardly grown in the country till the mid-sixties. The first yellow-seeded soyabean varieties were introduced … Continued
Cyclone Gaja, a severe cyclonic stormwith wind speeds as high as 110 kmphwreaked havoc in Tamil Nadu. Tropical Cyclones A tropical cyclone is an intense low pressure area or a whirl in the atmosphere over tropical or sub-tropical waters. From the centre of a cyclonic storm, pressure increases outwards. The rate at which the pressure … Continued
A cargo of 16 containers carrying snacks and other food items manufactured by Pepsi is on its way to Varanasi. What makes this nine-day journey special is that instead of roads or railways, this cargo has taken the waterway — part of an effort by the government to resurrect the Ganga as a significant transportation … Continued
OVER THE years, various citizens and political leaders have debated whether India should have two separate time zones. The demand is based on the huge difference in daylight times between the country’s longitudinal extremes, and the costs associated with following the same time zone. Those arguing against the idea, on the other hand, cite impracticability … Continued
Cyclone Titli became the third major cyclone to hit the Odisha-Andhra coastal zone in the last five years, all in October. What explains the similar timing, and how effective are the mechanisms for prediction and disaster mitigation? Season & frequency Cyclones have always been frequent in the region. What has risen is is the “frequency … Continued