Nature – Page 3 – Nature Observer

Evolution: The Story of Life on Earth

Evolution is the process by which living organisms change and diversify over time. It explains how simple life forms that appeared billions of years ago gradually developed into the complex…

DeKa September 23, 2025

Environmental Hazards Nature Our Planet

Permafrost: The Frozen Ground of the Earth

Permafrost is ground that remains frozen for at least two consecutive years. It is composed of soil, rocks, sand, and organic material bound together by ice. Permafrost is mostly found…

DeKa September 23, 2025

History Nature Our Planet

Pangaea: The Supercontinent of Earth’s Past

Pangaea was a massive supercontinent that existed about 335 to 175 million years ago during the late Paleozoic and early Mesozoic eras. It brought together almost all of Earth’s landmasses…

DeKa September 22, 2025

Environmental Hazards Nature

Magma: What It Is and Its Types

Magma is molten or partially molten rock located beneath the Earth’s surface. It forms deep underground where high temperatures and pressures cause solid rock to melt. Magma is a mixture…

DeKa September 20, 2025

Climate Environmental Hazards Nature

What Are Deep-Focus Earthquakes and How Do They Differ from Shallow Ones?

Earthquakes are sudden releases of energy in the Earth’s crust or mantle, producing seismic waves. Most earthquakes occur at relatively shallow depths, but some originate much deeper within the Earth.…

DeKa September 18, 2025

Nature Ocean Secrets

Why the Sea Is Salty

The salty taste of seawater is one of the most recognizable features of our oceans. While freshwater rivers flow constantly into the sea, carrying dissolved minerals, the oceans remain salty…

DeKa September 16, 2025

Nature Our Planet

Extremophiles

Extremophiles are organisms that thrive in environments once thought too harsh to support life. The name comes from Latin: extremus (extreme) and Greek philos (lover), meaning “lovers of extremes.” These…

DeKa September 12, 2025

Climate Nature Our Planet

Indian Summer

Indian summer is a short period of warm, sunny weather that occurs in early autumn, usually after the first noticeable cooling. It is a transitional time between summer and fall,…

DeKa September 8, 2025

Nature Our Planet

The Longest-Living Tree in the World

Trees are some of the most enduring organisms on Earth, capable of living for thousands of years. They survive extreme climates, natural disasters, and human history, becoming living witnesses of…

DeKa September 8, 2025

Nature Our Planet

The Most Unusual Plants in Nature

Nature is full of extraordinary plants that defy common expectations with their appearance, survival strategies, or behavior. Some of these species look like they came from another planet, while others…

DeKa September 8, 2025