How many hearts does an octopus have?
2
3
4
5
Octopuses have three hearts: two pump blood to the gills, while the third circulates blood to the rest of the body. The third heart actually stops beating when they swim!
In what year was the first text message (SMS) sent?
1989
1992
1994
1996
The first SMS was sent by Neil Papworth to Richard Jarvis on December 3, 1992. The message simply read ‘Merry Christmas’.
How many times does the average person laugh per day?
7
13
17
22
Research shows adults laugh an average of 13 times per day, while children can laugh up to 300 times daily!
What percentage of the ocean remains unexplored?
0.65
0.8
0.95
0.99
Despite modern technology, approximately 80% of our oceans remain unmapped, unobserved, and unexplored.
How fast can a sneeze travel?
85 mph
100 mph
200 mph
100 mph
A sneeze can expel droplets at speeds of up to 100 mph, creating upwards of 100,000 droplets in the process!
What year was the first email sent?
1965
1971
1975
1981
Ray Tomlinson sent the first email in 1971. He also introduced the use of the @ symbol in email addresses.
How many taste buds does the average human tongue have?
1000
5000
10000
20000
The average human tongue has about 10,000 taste buds, each replaced every two weeks!
What percentage of Earth’s species live in the ocean?
0.5
0.8
0.94
0.99
An astounding 94% of Earth’s living species exist within the oceans, with many still undiscovered.
How many bones are in a giraffe’s neck?
5
7
9
12
Giraffes have the same number of neck vertebrae as humans – seven! They’re just much longer.
In what year was the first photograph taken?
1806
1826
1839
1851
The first permanent photograph was taken by Joseph Nicéphore Niépce in 1826, showing a view from his window in France.
How many dreams does the average person have per year?
1000
1460
2190
3000
People average about 4 dreams per night, totaling around 1,460 dreams per year, though most are forgotten upon waking.
What percentage of the human body is water?
0.45
0.6
0.75
0.9
The adult human body is about 60% water, with the brain being composed of about 73% water.
How many times does the average person walk around the Earth in their lifetime?
2.5
3.5
4.5
5.5
The average person walks the equivalent of 4.5 times around the Earth in their lifetime, roughly 110,000 miles!
What year was the first pizza delivered?
1889
1905
1922
1944
The first documented pizza delivery was to King Umberto I and Queen Margherita of Italy in 1889, creating the famous Margherita pizza.
How many bacteria are in the average human mouth?
1 million
10 million
100 million
700 million
The human mouth contains about 700 million bacteria, representing more than 6 billion bacteria cells!
What percentage of DNA do humans share with bananas?
0.25
0.35
0.5
0.6
Humans share about 50% of their DNA with bananas, showing our deep evolutionary connections with all life.
How many times does the average heart beat in a lifetime?
2.5 billion
3.0 billion
3.5 billion
4.0 billion
The average human heart beats about 3 billion times during a typical lifetime!
In what year was the first video game created?
1947
1958
1962
1971
The first video game, ‘Tennis for Two,’ was created by William Higinbotham in 1958 at Brookhaven National Laboratory.
How many years can a plastic bottle take to decompose?
100
250
450
1000
A single plastic bottle can take up to 450 years to decompose completely in the environment.
What percentage of the world’s oxygen is produced by the Amazon rainforest?
0.1
0.2
0.3
0.4
The Amazon rainforest produces about 20% of Earth’s oxygen, earning it the nickname ‘the lungs of the planet’.
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