Category 1. Science facts
Category 2. Human Body Oddities
Category 3. Mind-Blowing Nature
Category 4. Weird Science Facts
Category 5. Discoveries That Changed History
100

This scientist discovered gravity by watching an apple fall—thankfully not onto his head.

Who is Isaac Newton?

100

What protects your stomach acid which is strong enough to dissolve Zinc metal from digesting itself?

Stomach digest itself without mucus lining.

100

This plant can to trap and insects in less than a second.

What is the Venus Flytrap?

100

In space, astronauts float because of this condition.

What is microgravity?

100

Before the 1800s, surgery was torture. The discovery that ether and chloroform could be used as this allowed patients to sleep through the pain.

What is Anesthesia?

200

The accidental discovery of this life-saving medicine happened because a scientist couldn't clean his messy lab.

What is penicillin?

200

Humans share about 60% of their DNA with this common food.

What is a banana?

200

Octopuses have three hearts and blue blood because of this metal in their blood.

What is copper?

200

The first living organism cloned from an adult cell was this animal.

What is Dolly the sheep?

200

In 1796, Edward Jenner used material from cowpox sores to create the first vaccine, eradicating this disease which had plagued humanity for centuries.

What is Smallpox?

300

This gas makes up 78% of Earth’s atmosphere.

What is nitrogen?

300

This organ was once thought useless but is now known to help immunity.

What is the appendix?

300

The fastest land animal can reach nearly 120 km/h.

What is the cheetah?

300

This is the only metal that is liquid at room temperature.

What is mercury?

300

This invention made producing food more predictable by supplying plants with key nutrients.

What are chemical fertilizers?

400

This metal explodes when dropped into water — but is stored in oil to prevent it.

What is sodium?

400

This everyday fruit contains more DNA than a human.

What is a strawberry?

400

This animal can regrow an entire brain structure if damaged.

What is a planarian (flatworm)?

400

On the Moon, this lasts about two Earth weeks.

What is daytime?

400

This discovery led to the development of new hygiene practices, such as hand washing and sterilization.

What is Germ Theory?

500

There are more of these tiny organisms living in your body than human cells

What are bacteria?

500

This animal has five hearts and three brains.

What is an octopus?

500

Some species of this tiny creature can survive in space for years.

 What are tardigrades (water bears)?

500

This animal has blue blood.

What is an octopus (or horseshoe crab)?

500

This space telescope, launched in 1990, allowed scientists to observe distant galaxies and expand our understanding of the universe.

What is the Hubble Space Telescope?