DeKa – Page 20 – Nature Observer

Mega‑Earthquake Risk in Japan: Focus on the Nankai Trough

Japan sits along the Pacific Ring of Fire and is prone to powerful seismic events. Among the gravest threats is a mega‑earthquake (magnitude 8–9) in the Nankai Trough, an undersea trench…

DeKa July 10, 2025

Our Planet

Aphelion and Perihelion: Understanding the Extremes of Planetary Orbits

Every planet in our Solar System follows an elliptical orbit around the Sun, not a perfect circle. This means the distance between the planet and the Sun changes throughout the…

DeKa July 9, 2025

Environmental Hazards Our Planet

Is Earth’s Rotation Speeding Up? Exploring the Acceleration of Our Planet’s Spin

The Earth rotates once every 24 hours, giving us the day-night cycle. But this rotation isn't perfectly constant. Recently, scientists have observed slight increases in Earth’s rotational speed, meaning the…

DeKa July 9, 2025

Climate Environmental Hazards

Derecho: The Powerful Straight-Line Storm You Should Know About

A derecho is a rare but extremely powerful straight-line windstorm that moves rapidly across a large area, often leaving destruction similar to a tornado — but without the rotation. The…

DeKa July 9, 2025

Nature Our Planet

Photosynthesis: How Plants Turn Sunlight Into Life

Photosynthesis is a process by which plants, algae, and some bacteria use sunlight, water, and carbon dioxide to produce glucose (a form of sugar) and oxygen. It is one of…

DeKa July 8, 2025

Nature Our Planet

Sunlight as the Foundation of Life

Sunlight is the primary energy source for our planet. It provides the warmth that makes Earth habitable. One of its most critical roles is enabling photosynthesis, the process by which…

DeKa July 8, 2025

Climate Crisis Environmental Hazards

How Sudden Can Floods Be? Real-Life Examples of Flash Flooding

Floods are among the most devastating natural disasters, capable of reshaping landscapes, damaging infrastructure, and endangering human lives. While some floods build up slowly over time, others strike with terrifying…

DeKa July 6, 2025

Climate Environmental Hazards Our Planet

Could Rising Magma Be a Cause of Siberia’s Anomalous Warming?

Siberia, one of the coldest inhabited regions on Earth, has been experiencing anomalous warming at a rate much faster than the global average. While most scientists attribute this primarily to…

DeKa July 6, 2025

Nature Our Planet

The Web of Life

Nature operates as a complex, interdependent system where all living and non-living components are intricately connected. From tiny microbes in the soil to massive whales in the ocean, every organism…

DeKa July 5, 2025

Environmental Hazards Our Planet

What Is Mount Elbrus?

Mount Elbrus is a dormant stratovolcano located in the western Caucasus Mountains of southern Russia, near the border with Georgia. At an elevation of 5,642 meters (18,510 feet) above sea…

DeKa June 29, 2025