This honor goes to Dr. Ronald Breslow of Columbia University, who ended his recent paper "Evidence for the Likely Origin of Homochirality in Amino Acids, Sugars, and Nucleosides on Prebiotic Earth" in the Journal of the American Chemical Society with an ominous editorial. After an otherwise technical paper about the prehistoric origins of amino acids, the conclusion takes a turn for the extremely sinister. Emphasis is ours:

An 
implication 
from
 this 
work 
is 
that 
elsewhere 
in 
the 
universe 
there 
could 
be 
life 
forms 
based
 on 
D 
amino 
acids 
and 
L 
sugars, 
depending 
on 
the 
chirality 
of 
circular 
polarized
 light 
in
 that 
sector 
of 
the universe or 
whatever 
other 
process 
operated 
to 
favor 
the 
L
α‐methyl 
amino acids 
in 
the 
meteorites 
that 
have landed
 on Earth. 

Such 
life 
forms 
could 
well 
be 
advanced 
versions 
of 
dinosaurs, 
if 
mammals 
did 
not 
have the good
 fortune 
to 
have 
the 
dinosaurs 
wiped 
out 
by 
an 
asteroidal 
collision,
 as 
on 
Earth. 

We 
would 
be 
better 
off not 
meeting 
them.

To make matters all the more hilarious, the press release for this paper has somehow spun this extraterrestrial snippet into the central focus:

Could "Advanced" Dinosaurs Rule Other Planets?
New scientific research raises the possibility that advanced versions of T. rex and other dinosaurs — monstrous creatures with the intelligence and cunning of humans — may be the life forms that evolved on other planets in the universe.

Given the nature of online academic publishing, there is the possibility this sentence could be excised in the final draft. For the sake of future human-xenosaurian diplomacy, this may not be a terrible idea. Our Star Tyrannosaurus allies could have extremely sensitive feelings.

[Via The Awl]