Changes
/* Biology */ The intelligence of humans is rapidly declining
=== Biology ===
# The intelligence of humans is rapidly declining, whether measured by SAT scores,<ref>SAT scores have been rapidly decreasing in real terms.</ref> music, personal letters,<ref>E.g., Civil War letters.</ref> quality of political debates,<ref>E.g., contrast the Lincoln-Douglas debates with debates today.</ref> the quality of news articles,<ref>''The Federalist'' was written for the newspaper audience in the late 1780s, but is far too intellectual for newspapers today.</ref> or any other measure.
# The age of onset of [[puberty|sexual maturity]] is rapidly changing, suggesting that life is in a short-term rather than long-term equilibrium<ref>For evidence of a rapidly changing age for sexual maturity in fish, see http://icesjms.oxfordjournals.org/cgi/content/abstract/46/3/235</ref>
# The high observed rate of [[extinctions of species]] and harmful [[genetic mutation]]s suggest a relatively short period for the existence of life rather than a long one.
