Which of these things is not like the others?

sci.geo.meteorology
sci.environment
soc.religion.quaker
soc.history.ancient
sci.archaeology

Why is there a religion group among the science groups?

The reason that the quaker group is there is because the poster
who signs his posts "David Christainsen - Meteorologist" is trying
to destroy the Quaker newsgroup by flooding it with off-topic posts
about global warming. Why does he want to hurt the Quakers?
Because he was expelled from a Quaker meeting for being disruptive.

When you reply to the same newsgroups, letting David Christainsen
control where your posts go, you help him in his ongoing quest to
destroy soc.religion.quaker. If you delete s.r.q from the
"Newsgroups:" line, you will be doing the Quakers a huge favor.

....And no, he isn't really a Meteorologist. He belongs to no
meteorology organization, has no degree in meteorology, and
has never held a job in the field of meteorology. It appears
that his definition of "Meteorologist" is "someone who posts
to a meteorology newsgroup".

The Quakers thank thee in advance for thy kindness to them.

"...The unarmed Quakers in Pennsylvania were safe
from attack by Indians for sixty years while in all
the other colonies armed whites suffered massacres.
Then one day a couple of Quakers, a little afraid
and influenced by the example of other white men,
took guns with them to their work some distance from
the cabin. The Indians concluded that the Quakers
must be contemplating an attack on them, decided
that the best defense was an offensive, and promptly
killed the Quakers."

-A. J. Muste, _Non-Violence in an Aggressive World_