[Tex/LaTex] Full width title in Tufte document class with Fancyhdr

Question

I would like the title to span the full page rather than the 1st column. Tufte provides fullwidth for this however the title page overflows and shifts onto page 2.

Package Fancyhdr Warning: \headheight is too small (14.0pt):
Make it at least 25.54448pt.
We now make it that large for the rest of the document.
This may cause the page layout to be inconsistent, however.

\documentclass{tufte-handout}

%\geometry{showframe}% for debugging purposes -- displays the margins

\usepackage{amsmath}

% Set up the images/graphics package
\usepackage{graphicx}
\setkeys{Gin}{width=\linewidth,totalheight=\textheight,keepaspectratio}
\graphicspath{{graphics/}}

\title{Investigating Alzheimer's Disease using Large Scale Models of Mammalian Thalamocortical Networks}
\author[Thomas H. Alderson]{Thomas H. Alderson}
\date{}  % if the \date{} command is left out, the current date will be used

% The following package makes prettier tables.  We're all about the bling!
\usepackage{booktabs}

% The units package provides nice, non-stacked fractions and better spacing
% for units.
\usepackage{units}

% The fancyvrb package lets us customize the formatting of verbatim
% environments.  We use a slightly smaller font.
\usepackage{fancyvrb}
\fvset{fontsize=\normalsize}

% Small sections of multiple columns
\usepackage{multicol}

% Provides paragraphs of dummy text
\usepackage{lipsum}

% These commands are used to pretty-print LaTeX commands
\newcommand{\doccmd}[1]{\texttt{\textbackslash#1}}% command name -- adds backslash automatically
\newcommand{\docopt}[1]{\ensuremath{\langle}\textrm{\textit{#1}}\ensuremath{\rangle}}% optional command argument
\newcommand{\docarg}[1]{\textrm{\textit{#1}}}% (required) command argument
\newenvironment{docspec}{\begin{quote}\noindent}{\end{quote}}% command specification environment
\newcommand{\docenv}[1]{\textsf{#1}}% environment name
\newcommand{\docpkg}[1]{\texttt{#1}}% package name
\newcommand{\doccls}[1]{\texttt{#1}}% document class name
\newcommand{\docclsopt}[1]{\texttt{#1}}% document class option name

\begin{document}
\begin{fullwidth}
\maketitle% this prints the handout title, author, and date
\end{fullwidth}

\end{document}

Answer 1

I'm not sure you really want this.

\documentclass{tufte-handout}

\geometry{showframe}% for debugging purposes -- displays the margins
\usepackage{calc}

\usepackage{lipsum} % just for the example

\title[Investigating Alzheimer's Disease]
      {Investigating Alzheimer's Disease using Large Scale Models
       of Mammalian Thalamocortical Networks}
\author[Thomas H. Alderson]{Thomas H. Alderson}
\date{}  % if the \date{} command is left out, the current date will be used

\begin{document}

\noindent
\makebox[\textwidth][l]{%
  \begin{minipage}[b]{\textwidth+\marginparsep+\marginparwidth}
  \raggedright
  \maketitle
  \end{minipage}%
}

\lipsum

\end{document}

The message about \headheight is too small is due to the long title in the heading, that I solved with a short title.