If Thomas Edison hadn’t invented the light bulb Activity

Hollow Earth Theory

Apr 25, 1692

If Edmund Halley hadn’t invented the Hollow Earth Theory (1692), Jules Verne wouldn’t write Journey to the Earth’s Center.

Geological Changes

Apr 25, 1830

If Charles Lyell's hadn’t noticed the Geological Changes (1830), we wouldn’t know wich the earth is a planet in transformation.

Anesthesia

Apr 25, 1842

If Crawford W. Long hadn’t invented the anesthesia (1842), we wouldn’t have surgery without pain.

Natural Selection

Apr 25, 1857

If Charles Darwin hadn’t discovered the Natural Selection (1857), we would think the man was created by mud and the woman by one rib.

Light bulb

Apr 25, 1879

If Thomas Edison hadn’t invented the light bulb (1879), a Chinese guy would took the all credits for it.

Radioactivity

Apr 25, 1896

If Henri Becquerel hadn’t discovered the Radioactivity (1896), we wouldn’t see the broken bones in the radiography.

Paleomagnetism

Apr 25, 1906

If Bernard Brunhes hadn’t discovered the Paleomagnetism (1906) we wouldn’t know which the poles have migrated every one hundred thousand years.

Continental Drift

Apr 25, 1912

If Alfred Wegner hadn’t discovered the Continental Drift (1912), we wouldn’t know that the continents were one big continent named Pangea.

Sea Spreading

Apr 25, 1950

If Harry Hess hadn’t discovered the Sea Spreading (1950), we wouldn’t know about the crust formation in the earth.

Plate Tectonics

Apr 25, 1960

If the geologist hadn’t discovered the Plate Tectonics (1960), we wouldn’t know the origin of the earthquakes.