Human biodiversity (hbd) is the diversity found among and between human populations that has a biological basis.

Three things to note: (hbdchick.wordpress.com)

• There’s more to human biodiversity than just IQ.
• There’s more to human biodiversity than just racial differences.
• There’s more to human biodiversity than just racial differences in IQ.

Admittedly, I can get a bit narrowly focused on race and IQ, like lots of people into HBD. There's lots of data and it's so taboo. However, it is important to remember other types of human groups (sexes, sexual orientations, etc.) and other traits (physical traits, personality traits, etc).