# Degree symbol in bib file

I can't get a the degree symbol to appear in the title.

I have tried:

title={Surface Tension of Alcohol and Water from 20 to 50{\degree}},


and

title={Surface Tension of Alcohol and Water from 20 to 50{$\degree$}},


And my Latex file is below:

\documentclass[a4paper,12pt]{scrartcl}

\usepackage[style=authoryear-comp,firstinits=true,natbib=true,uniquename=false,uniquelist=false, maxcitenames=2]{biblatex}

\nocite{*}

\begin{document}

\end{document}


The error I get is:

You have to define the \degree command first. See Macro for degree symbol for possible pretty degree symbols.
A quick & dirty fix that works is just to change the \degree to ${}^\circ$, so
    title={Surface Tension of Alcohol and Water from 20 to 50${}^\circ$},