DeKa – Page 24 – Nature Observer

Urbanization: How Cities Shape the Modern World

Urbanization is the process by which populations move from rural areas to cities, leading to the growth of urban settlements. Over the past century, it has become one of the…

DeKa October 1, 2025

Be smart Nature

Why Leaves Turn Different Colors in Autumn

During spring and summer, leaves are green because of chlorophyll, the pigment that absorbs sunlight and helps plants make food through photosynthesis. Chlorophyll is continuously produced in warm, sunny seasons,…

DeKa October 1, 2025

Climate Nature Our Planet

The Benefits of Sunlight for Earth

Sunlight is the primary source of energy for almost all life on Earth. Through photosynthesis, plants convert sunlight into chemical energy, forming the base of the food chain. Without solar…

DeKa October 1, 2025

Ecology Global Challenges What if?

What Would Happen If All Forests on Earth Were Cut Down?

Forests play a critical role in maintaining Earth’s ecosystems. They absorb carbon dioxide and release oxygen, making them the "lungs of the planet." Without forests, the balance of gases in…

DeKa October 1, 2025

Climate Global Challenges Our Planet

The Weakening of Earth’s Magnetic Field Over the Last 50 Years and Its Consequences

The magnetic field of Earth is generated by the motion of molten iron and nickel in the outer core. This process, called the geodynamo, creates a protective shield around the…

DeKa October 1, 2025

Ecology Nourished Future Tech & Nature

How to Preserve Nature in Modern Civilization

Modern civilization has brought rapid technological progress, but also unprecedented pressure on the environment. Deforestation, pollution, climate change, and biodiversity loss are major challenges. Balancing human development with ecological stability…

DeKa October 1, 2025

Crisis Ecology Global Challenges

What Opportunities Would Open if Humanity Ended All Wars?

War consumes enormous financial and material resources. If humanity stopped all conflicts, trillions of dollars currently spent on weapons, military operations, and defense could be redirected to healthcare, education, infrastructure,…

DeKa October 1, 2025

Be smart Our Planet

How the Relief of a Planet Is Formed

Relief refers to the variations in height and shape of the planet’s surface, including mountains, valleys, plains, and plateaus. On Earth, the relief is the result of a complex interaction…

DeKa October 1, 2025

Be smart Climate Our Planet

What Are Seismic Waves?

Seismic waves are vibrations that travel through Earth, usually generated by earthquakes, volcanic eruptions, explosions, or other strong disturbances. They carry energy away from the source of the event and…

DeKa September 30, 2025

Be smart Environmental Hazards What if?

What Would Happen if Earth Fell Under the Influence of a Pulsar?

A pulsar is a rapidly rotating neutron star, the dense remnant of a massive star after a supernova. Pulsars emit powerful beams of electromagnetic radiation, including radio waves, X-rays, and…

DeKa September 30, 2025