Authors- Ashok Ghildiyal and Ashish Joshi, Indian Institute of Remote Sensing, ISRO Dehradun NOAA weather satellites continuously transmit Automatic Picture Transmission (APT) signals that carry live images of the Earth’s surface. These signals can be received using a software-defined radio (SDR) such as an RTL-SDR dongle, paired with a suitable antenna and decoding software. The NOAA satellites, particularly NOAA-18 and Continue Reading »

Natural dust emission from an arid or semi-arid region occurs when near-surface wind speed exceeds a threshold wind speed which can further be modulated by several factors such as surface roughness, soil texture, soil moisture, vegetation cover etc. Many major dust sources are located in the subtropical dry belt primarily due to the subtropical high pressure system attributed to the Continue Reading »

The Science in Sci-Fi The realm of Sci-Fi transgresses to real science in Andy Weir’s book and its film adaptation “Project hail Mary”. This article explores the various concepts introduced in the movie from an educational perspective. The story begins with the protagonist waking up in a spaceship with no recollection of anything whatsoever. As he tries to make sense Continue Reading »

Authors- Asfa Siddiqui, Poonam S. Tiwari and Raghavendra Pratap Singh Greenhouse gases, especially CO2 and CH4 are amongst the primary contributors of anthropogenic climate change. Methane (CH₄), a potent greenhouse gas, has a global warming potential over 28 times and 84 times greater than CO₂ over a 100-year and 20-year period, respectively (Saunois et al. 2024). In the wake of Continue Reading »

In the lush green hills of Northeast India, bamboo is far more than a plant. It is a symbol of culture, a livelihood resource, and increasingly, a natural ally in the fight against climate change. A recent study in Assam’s Dima Hasao district has revealed remarkable insights into how bamboo thrives under human disturbance and a changing climate, painting a Continue Reading »