21-30

The human genome has about 3.2 billion base pairs, or sets of genetic "letters."

The average person can type about 40 words per minute. Let's assume that a base pair is the same length in characters as a "word."

If you typed out the human genome at this rate and did this for 24 hours a day, how long would it take you?

The DNA of any two people on Earth is 99.6% identical.

The human genome has about 3.2 billion base pairs, or sets of genetic "letters."

How many base pairs in the genome create the differences between people?

NASA's budget for 2020 is $22.6 billion.

The average in-state public college tuition for 2020 in the U.S. is $6,072.

How many students can attend an in-state public college for 4 years with $22.6 billion?

Of the approximate 30 trillion cells in the human body, 83% of them are red blood cells (RBCs).

The mass of each RBC is only 1 nanogram.

What is the total mass of the RBCs in one human?

Oregon has 1,333,723 households.

Let's say that each household has a leaky faucet that drips at a rate of 1 drip (1/4 ml) per minute.

How many liters of water is wasted in Oregon households in one day?

On average, a hummingbird weighs about 0.15 ounces.

A much larger bird, such as a male ostrich, can weigh over 344 pounds (156 kg).

What is the weight ratio of ostrich to hummingbird?

Saffron is the world's most expensive spice. One gram of saffron costs about $11 on Amazon.

A 0.46 oz bottle of dried rosemary costs $3 at Whole Foods.

One gram is equal to 0.035274 ounces. What is the cost ratio of saffron to rosemary?

Tortoises have the longest lifespan among vertebrates, about 200 years.

A fruit fly's lifespan is about 45 days.

If we scaled both lifespans down so that a tortoise's 200 years is now 1 day, then what is the fruit fly's lifespan, in seconds?

The volume of Mt. Everest is about 2.1 trillion cubic feet.

A dump truck, on average, can haul 14 cubic yards.

How many dump trucks would it take to haul away Mt. Everest?

The temperature of the sun's core is 15 million degrees Celsius.

The temperature of the Earth's core is 6,000 degrees Celsius.

What is the ratio of core temperatures of the sun to Earth?