Natural science – major branch of science, that tries to explain and predict nature's phenomena, based on empirical evidence.
In natural science, hypotheses must be verified scientifically to be regarded as scientific theory.
For example, scientists have figured out there are big health benefits from laughter, psychologists conducted a huge survey to figure out the funniest joke in the world and why people found it funny, and there's even a Humor Research Lab in Colorado.
We can learn a lot from studying humor, but science also makes a great subject for a lot of jokes.
Here are 31 science-themed jokes and puns and their explanations.