What Are the Reasons for Non-Communicable Diseases?
Non-communicable diseases (NCDs) — often called chronic diseases — are caused by...
Team ACMFebruary 22, 2026
What Are the Causes of Infectious Diseases?
Infectious diseases are caused by pathogenic micro-organisms — germs — that enter...
Team ACMFebruary 22, 2026
Why is the Number of Diseases Increasing?
The rise in disease burden globally is driven by multiple overlapping factors....
Team ACMFebruary 22, 2026
Why Did Man-Killing Viruses Evolve?
Highly lethal viruses did not evolve with the intention of killing humans....
Team ACMFebruary 22, 2026
How Did Early Humans First Die from Illness?
Early humans in the Paleolithic era faced a very different disease landscape than we do today. Primary Causes of Death Infectious diseases caused approximately 75% of deaths in early human...
Team ACMFebruary 22, 2026
How Did Water Form on Earth?
Water is essential for life, but its origin on Earth is still debated among scientists. Two main theories exist. Theory 1 — Born...
Team ACMFebruary 22, 2026
How Did Oxygen Form and Accumulate on Earth?
The Earth's early atmosphere contained almost no free oxygen. The transformation to an oxygen-rich atmosphere was driven primarily by biological processes, particularly photosynthesis....
Team ACMFebruary 22, 2026
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