A broad category referring to the study of the physical universe including nature and biology.

Humans Have Many Different Types of Cells Fact

The human body has about 37 trillion cells, comprising 200 different types. Each cell has structures responsible for making hundreds of thousands of different proteins from 20 types of amino acids.

We Know How Complex Cells Evolved Fact

Complex cells (eukaryotes) likely evolved from single-celled organisms (prokaryotes) absorbing other prokaryotes, becoming single complex cells over time (endosymbiosis).

The Universe is Mostly Empty Space Myth

The universe and everything in it, including humans, is mostly “empty space”. However, space is not actually “empty”, it’s filled with quantum fields and dark energy.

All Fruits Come From Flowers Fact

All fruits come from flowers, but not all flowers become fruits. Fruits are typically derived from the ovaries of a flower and contain seeds.

Humans Only Use a Small Part of Their Brain Myth

Evidence suggests that humans use virtually every part of their brain on a daily basis. Some areas function more than others at any given time, but every part of the human brain has a function.

Time is Relative Fact

Time is relative to speed and gravity (time dilation), and so is space (length contraction). Light speed is constant for all observers, so time and space can’t be.