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Planet Arc Welcome to Planet Arc — exploring Earth’s journey from ancient origins, climates, and natural disasters to human impacts. Learn and act for our planet!

Discover stories, insights, and research connecting evolution, biodiversity, and conservation.

28/09/2026

The colossal weather engine that powers a billion lives 🌧️🗺️
Every summer, a massive atmospheric shift sends warm, moisture-laden winds surging across the Indian Ocean and straight toward the subcontinent. But when these enormous currents of humid air reach the towering barrier of the Himalayas, the real magic of the monsoon begins.

27/09/2026

The misty mountain kingdom where ancient life thrives 🐒🌿
Protected by millions of years of geographic isolation and soaked by heavy monsoon rains, the Western Ghats are much more than just dramatic escarpments—they are one of the world's premier biodiversity hotspots. From dense shola cloud forests to misty highland peaks, this ancient landscape shelters countless rare and endemic species found nowhere else on Earth.

26/09/2026

The cliff face holding a 66-million-year-old secret 🌊⛰️
The stunning, sheer drops of the Western Ghats aren't just ordinary mountains—they are the eroded edge of one of Earth's most cataclysmic volcanic events. Formed around 66 million years ago from colossal flood basalt eruptions, these stepped cliffs were slowly carved by millions of years of monsoon rain, revealing the incredible story of the Deccan Plateau.

25/09/2026

The land bridge that changed the entire planet

For millions of years, North and South America were completely separated by deep ocean seaways. But as tectonic plates shifted and volcanic activity slowly pushed upward from the seafloor over millions of years, the Isthmus of Panama finally rose to bridge the gap—permanently uniting two continents and reshaping global ocean currents and wildlife forever.

24/09/2026

The mountains that are still growing beneath our feet

The towering peaks of the Andes aren't finished yet. Right now, off the coast of South America, the dense Nazca Plate is relentlessly diving beneath the South American Plate—squeezing, folding, and lifting the Earth's crust higher and higher with every passing century.

23/09/2026

When the planet turned up the heat

As billions of tons of greenhouse gases choked the atmosphere, the consequences spread globally across ancient Pangaea. Temperatures soared to staggering heights, rivers dried up, and once-thriving ecosystems faced unprecedented environmental stress as Earth began to overheat.

22/09/2026

The eruption that almost ended life on Earth 🌋🔥
​252 million years ago, the Siberian Traps unleashed the largest volcanic event in Earth’s history. Instead of single volcanoes, massive fissures tore open across the crust, flooding millions of square miles with glowing basaltic lava and choking the skies with greenhouse gases.
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21/09/2026

The supercontinent begins to crack 🌍⚡
Deep beneath the crust, immense tectonic forces pulled Pangaea in opposite directions. The rock stretched, fractured, and paved the way for brand-new oceans to tear the world apart.

20/09/2026

The fiery secret behind Bali’s peaks
Ever wonder why Bali is dominated by such towering, majestic volcanoes like Mount Agung? It all comes down to tectonic muscle. Deep beneath the island, relentless subduction melts the mantle, forcing magma upward to forge these incredible mountains above the sea.

19/09/2026

India’s incredible 5,000-mile journey across the planet

Millions of years ago, India wasn't attached to Asia at all. It was part of the ancient supercontinent Gondwana, sitting near Madagascar and Antarctica.
After breaking away, the Indian plate rocketed northward across an ancient ocean at record tectonic speeds, eventually slamming into Eurasia. That massive continental collision crumpled the crust to build the highest peaks on Earth: the Himalayas.

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