DeKa – Nature Observer

What Would Happen If Earth’s Core Stopped?

Earth’s core is crucial for maintaining the planet’s magnetic field, geological activity, and overall stability. It is divided into a solid inner core made of iron and nickel, and a…

DeKa September 5, 2025

Nature Our Planet

Stalactites and Stalagmites

Inside caves, nature slowly creates stunning formations called stalactites and stalagmites. These mineral structures grow over thousands of years through the steady dripping of mineral-rich water. Their beauty makes caves…

DeKa September 5, 2025

Climate Environmental Hazards Tech & Nature

Could Humanity Survive a 4-Kilometer Tsunami Sweeping Across the Planet?

A tsunami is a massive wave usually triggered by underwater earthquakes, volcanic eruptions, or asteroid impacts. The largest known historical tsunamis have reached several hundred meters, devastating coastlines. But what…

DeKa September 5, 2025

Environmental Hazards Global Challenges Stay Safe

What Can We Do to Survive a Supernova?

A supernova is the explosive death of a massive star, releasing enormous amounts of energy, light, and radiation. These explosions can briefly outshine entire galaxies and send shockwaves of matter…

DeKa September 5, 2025

Environmental Hazards Global Challenges Stay Safe

What Is Cosmic Radiation and How to Protect Against It?

Cosmic radiation refers to high-energy particles that come from space and constantly bombard Earth. Unlike ordinary sunlight, cosmic rays are mostly made of atomic nuclei and subatomic particles traveling at…

DeKa September 5, 2025

Environmental Hazards Global Challenges Stay Safe

How to Protect Against Gamma-Ray Bursts

Gamma-ray bursts (GRBs) are among the most powerful explosions in the universe. They release intense beams of high-energy radiation when massive stars collapse into black holes or when two neutron…

DeKa September 5, 2025

Crisis Environmental Hazards Global Challenges

What Threats to Humanity Come from Space?

Space is vast and awe-inspiring, but it also contains dangers that could threaten life on Earth. While many of these risks are rare, they highlight the vulnerability of our planet…

DeKa September 5, 2025

Crisis Environmental Hazards Global Challenges

Collision of a Comet with Earth – What We Can Do and the Consequences of Impact

The possibility of a large asteroid or comet colliding with Earth is rare but real. Throughout history, our planet has been struck by space objects of various sizes, some of…

DeKa September 5, 2025

Climate Nature Our Planet

Why Dinosaurs Disappeared

Dinosaurs dominated Earth for more than 160 million years, but around 66 million years ago, they suddenly disappeared in one of the most dramatic mass extinctions in history. Scientists believe…

DeKa September 5, 2025

Nature Our Planet

How Grottos Are Formed

A grotto is a small cave or cavern, often with a picturesque or decorative appearance. Unlike large cave systems that may extend deep underground, grottos are usually shallow and closer…

DeKa September 5, 2025