AlterEarth | Sri Kalyan Tangirala | Substack

A3: Arctic and Antarctic polar ice sheets are natural photo albums of the past atmosphere

We take photos almost every time we go on a trip, on special occasions like birthdays, anniversaries and what not.

Mar 15 • Sri Kalyan Tangirala

A2: A time when Oxygen nearly killed most life on Earth and triggered the first Ice Age..

Oxygen is one of the key substances that keeps majority of life on Earth alive, but can you imagine how it would've been like when it was once a poison…

Mar 1 • Sri Kalyan Tangirala

A1: A changing Atmosphere: How ancient microbes 'unintentionally engineered' Global Warming

The very thick and invisible blanket of air surrounding our planet that is pouring life into almost all of the visible life (yes, there are trillions of…

Jan 18 • Sri Kalyan Tangirala

E5: The beginning of life on Earth

Giraffes, dinosaurs, sharks and whales, to name a few, are organisms that roam or once roamed the very same lands we are on and make us look very tiny.

Dec 25, 2025 • Sri Kalyan Tangirala

E4: Earth's crust is a bunch of broken pieces constantly moving around

Did you know that Iceland is the one of the youngest landmasses (not as a country, but literally the land) on Earth and is just 16 - 18 million years…

Nov 10, 2025 • Sri Kalyan Tangirala

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