Science – Page 7 – Science Observer

Aerodynamics and Hydrodynamics: Why Airplanes Fly and Ships Do Not Sink

An airplane weighing hundreds of tonnes can rise into the sky, while a steel ship carrying thousands of containers can remain afloat. At first glance, both achievements appear to defy…

deka August 6, 2026

Bioengineering News Science

Forensic Science: DNA Profiling, Fingerprint Analysis, and Their Limits

DNA profiling and fingerprint examination are among the best-known tools in modern forensic science. Television dramas often present them as near-perfect methods that can identify a criminal with absolute certainty.…

deka August 5, 2026

History Science Tesla&Co

Sergei Korolev: The Visionary Engineer Who Became a Father of Practical Cosmonautics

Sergei Pavlovich Korolev was the architect behind several achievements that opened the space age. Under his leadership, the Soviet Union launched the first artificial satellite, sent the first human into…

deka August 5, 2026

Be Smart History Science

The Renaissance Era: How Art, Science, and Humanism Transformed Europe

The Renaissance was one of the most influential periods in European history. Beginning in Italian cities during the fourteenth century and spreading across Europe over the following two centuries, it…

deka August 4, 2026

History Inventions Science

Plastic by Accident: How Bakelite and Cellophane Emerged From Experiments That Went Off Plan

Many transformative inventions begin with a failure, an unexpected residue, or a material that behaves differently from what its creator intended. Bakelite and cellophane are often described as accidental inventions.…

deka August 4, 2026

Be Smart News Science

Seawater Desalination: How Effective Is It and Which Technologies Are Available?

Seawater desalination transforms salty ocean water into fresh water suitable for drinking, industry, and selected agricultural uses. It is already an essential water source in many arid coastal regions where…

deka July 29, 2026

Be Smart Science

Rusting Explained: What It Is and Modern Methods of Corrosion Protection

Rust is one of the most familiar signs of material deterioration. It appears on vehicles, tools, bridges, pipelines, fences, ships, reinforced concrete, and countless other structures containing iron or steel.…

deka July 29, 2026

Hi-Tech News Science

The Future of Nuclear Fusion: Can Star Power Become a Practical Energy Source?

Nuclear fusion is often described as the ultimate energy technology: abundant fuel, enormous energy density, no carbon dioxide emissions during operation, and no possibility of the runaway chain reaction associated…

deka July 28, 2026

AI & Ethics Be Smart Science

The Ethics of Animal Experimentation: Between Scientific Knowledge and Animal Suffering

Animal experimentation has contributed to medical research, drug development, toxicology, neuroscience, and the study of disease. At the same time, it raises one of science’s most difficult moral questions: when,…

deka July 28, 2026

Be Smart News Science

Anti-Vaxxers and the Fake Study That Fueled a Global Health Panic

Modern vaccine resistance did not begin with one scientific paper. Opposition to vaccination has existed since the nineteenth century, when early smallpox vaccination campaigns faced religious, political, and safety objections.…

deka July 28, 2026