Science
Dark Matter: The Invisible Substance That Holds Galaxies Together
Dark matter outweighs everything we can see, yet no one has detected it directly. Here is the case for the universe's invisible…
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Rayleigh Scattering: Why the Sky Is Blue and Sunsets Are Red
Blue noon skies and red sunsets are one phenomenon: Rayleigh scattering. How air molecules paint the heavens, explained by 19th-century physics.
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How Astronomers Find Exoplanets Light-Years From Earth
Astronomers have found over 5,000 exoplanets without ever seeing most of them. Here are the clever tricks used to find worlds light-years…
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Nuclear Radiation Explained: Alpha, Beta, Gamma and What They Do to You
Alpha, beta, gamma: three radiations, three very different risks. What nuclear radiation does to the body, where the real dangers lie, and…
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Space Debris: The Growing Junk Crisis in Earth’s Orbit
Millions of fragments of dead satellites and rocket stages now circle the Earth. Space debris is fast becoming a crisis that threatens…
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Evolution by Natural Selection: Darwin’s Idea Explained With Indian Examples
Darwin's idea in Indian dress: drug-resistant TB, the peacock's tail and the Western Ghats' frogs. Natural selection explained with subcontinental examples.
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What Happens to the Human Body in Space
In orbit the human body weakens, swells and steadily loses bone. Here is what months in weightlessness do to astronauts, and how…
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How Fossils Are Dated: Radiometric Dating Explained
How do we know a fossil is 66 million years old? Inside atoms tick clocks immune to heat and time. Radiometric dating…
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Why Sriharikota Sits on India’s East Coast: The Science of Launch Sites
Sriharikota sits on India's east coast for reasons written in pure physics. Here is the science behind choosing exactly where rockets lift…
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The Deccan Traps: When Lava Buried India and the Dinosaurs Died
Sixty-six million years ago, lava buried western India as the dinosaurs died. Asteroid or volcanoes? New dating says both: the story of…