Unlike most animals, which possess only one heart, an octopus has three hearts.
Evolutionary biology is a subfield of biology that focuses on the natural biological evolution of organisms.
The square cube law says that volume increases faster than surface area when an object increases in size proportionally. This affects biomechanics (AKA the way organisms are built).
Casually Explained is a great video series, here is Casually Explained explaining evolution. I suggest checking out the overarching YouTube Channel.
Charles Darwin came up with the idea of natural selection, but he didn’t coin the phrase “survival of the fittest”, that was Herbert Spencer in 1864’s Principles of Sociology.
Mammals don’t start as females, they start as a blank slate with XX or XY genetic code, and for the first 5-6 weeks of gestation only the X gene expresses.
Science suggests people are born in a range of places in the gay and transgender spectrum, with both nature and nurture playing a role in sexuality.
Some cells appear to be able to live forever in a lab. However the Hayflick limit sets a cap on the number of times a cell can divide.
Mountain goats aren’t goats, these close relatives of the goat are actually goat-antelopes. Oddly, they aren’t true antelopes either.
The exact origin of today’s dog is unclear, but studies show both dogs and wolves evolved from an extinct species of wolf of European origin that lived 30,000 years ago.
In pop-science, in reference to the brain, you’ll hear the terms “hardwired” and “softwired”, hardwired means genetically programed and softwired means learned.