ArcaMax

Knowledge

on Jul 31, 2024

South America
X Rays
Stethoscope
Penicillin

Penicillin. Time Magazine wrote in 1999 that penicillin "was a discovery that would change the course of history".

Science Trivia / May 17, 2025

Moon. The moon is about 1/80th the size of the Earth in mass.

Science Trivia / May 17, 2025

Keratin. A rhinoceros's horn is made of keratin.

Science Trivia / May 16, 2025

0.00%. Scientists believe the Earth is 4.56 billion years old.

Science Trivia / May 16, 2025

Nimbus. Clouds are classified according to their height and appearance.

Science Trivia / May 15, 2025

Precipitation. Drizzle, rain, snow and sleet are several of the different forms of precipitation.

Science Trivia / May 15, 2025

Great Barrier Reef. Australia's Great Barrier Reef can be seen from outer space.