climatehistory

🧊 A Lost World Found Beneath 2 km of Antarctic Ice

Scientists have uncovered evidence of an ancient landscape buried deep under Antarctica’s ice, revealing that the frozen continent once had rivers, vegetation, and a milder climate millions of years ago.

Key Facts:

• Sediments were found beneath ~2 km of ice in East Antarctica

• Fossil pollen and plant residues date back ~34 million years

• Indicates Antarctica once supported flowing water and vegetation

Expert Insight:
This discovery helps scientists better understand how Earth shifted from a warm climate to an ice-covered planet — crucial for improving long-term climate and ice-sheet models.

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700 Million Years Ago, Earth’s Oceans Plunged to Near-Freezing in Snowball Earth Era

During the Cryogenian Period, Earth experienced one of its most extreme ice ages — a global “Snowball Earth” event — when oceans may have reached near-freezing temperatures and ice sheets spread from the poles to the equator.

Key Facts:

Geological evidence shows glacial deposits near the equator, indicating extreme global cooling.

Ocean temperatures likely approached 0 °C, severely limiting marine life and ocean circulation.

Causes include low atmospheric CO₂ and extensive rock weathering, allowing temperatures to collapse globally.

Expert Insight:
Snowball Earth events demonstrate the planet’s climate extremes and resilience, shaping the evolutionary trajectory of early life and modern climate understanding.

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