Dendrochronology

XKCD 27 October, 2023

Daylight Saving Choice

XKCD 25 October, 2023

Extinction Mechanisms

XKCD 23 October, 2023

Black Holes vs Regular Holes

XKCD 20 October, 2023

Professional Oaths

XKCD 18 October, 2023

Inspiraling Roundabout

XKCD 16 October, 2023

Sign Combo

XKCD 13 October, 2023

Earth Layers

XKCD 11 October, 2023

Language Acquisition

XKCD 9 October, 2023