Category: Science

Android smartphones around the world have been actively helping provide earthquake alerts using their acceleration sensors. Between 2021 and 2024, these phones sent thousands of successful warnings to people living in quake-prone regions in 98 countries. Since 2020, Google has included its Android Earthquake Alert (AEA) system in its phones to detect seismic P- and…

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Across India’s coasts, from the languid channels of the Sundarbans delta to Mumbai’s stifled creeks, mangroves form a barrier between land and sea. These coastal forests are critical in India’s pursuit of climate resilience, biodiversity conservation, and the empowerment of coastal communities. However, in the face of urban expansion, climate change, and development, how are…

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The confusion comes from how our brains interpret the reflection. | Photo Credit: Andre Mouton/Unsplash A: This classic question has a surprisingly interesting answer. The fact is mirrors don’t actually flip left and right, much less up and down. Instead, they flip the image of the world you see front to back. When you stand…

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A pedestrian wears a face mask amid a thick blanket of smog in New Delhi, November 18, 2024. | Photo Credit: AP A: Air pollution is increasingly being recognised as an important threat to brain health. Research has demonstrated that exposure to airborne pollutants like fine particulate matter (PM2.5), nitrogen dioxide (NO2), and ozone can…

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In altermagnetic materials, atoms form a regular pattern with their spin and spatial orientation alternating on the neighbouring magnetic sites in the crystal. | Photo Credit: Libor Šmejkal (CC BY-SA) Some materials conduct electricity mainly with one kind of charge‑carrier everywhere: either negative electrons (n‑type) or positive ‘holes’ (p‑type).  A rare class can breach this…

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When gold is heated really quickly, it seems it remains solid at temperatures far beyond the point where it should have become liquid, a new study in Nature has found. The term for when a solid stays a solid at or beyond its melting point is superheating. Most materials can be superheated only in a…

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