1) How many species of lemurs are there?

There are 49 species of lemur discovered, according to:

BBC News - http://news.bbc.co.uk/2/hi/science/nature/4135670.stm
New Scientist - http://www.newscientist.com/article.ns?id=dn7818
Primates.com - http://www.primates.com/lemurs/new-species.html
(who got their information from New Scientist)
WildMadagascar.org - http://news.mongabay.com/2005/0809-wildmadagascar.html
Science Buzz - http://buzz.smm.org/buzz/blog/new_species_of_lemurs_found

Since all of these sites have the exact same number of species, they're probably correct. They also talk about two new species of lemur that were discovered recently.
*However, just because there are only 49 species of lemur discovered, doesn't mean there are not more out there.

2) What is the boiling point of radium?

Chemistry Data/Noble Mind: 1140 C
http://www.noblemind.com/search.exe?keyword=Radium+Boiling+Point&var=2

Jefferson Lab: 1140 C
http://education.jlab.org/itselemental/ele088.html

Environmental Chemistry: 1536 C
http://environmentalchemistry.com/yogi/periodic/Ra.html

Web Elements: 1737 C
http://www.webelements.com/webelements/elements/text/Ra/heat.html

Chemical Elements: 1737 C
http://www.chemicalelements.com/elements/ra.html

There is a very large range for the boiling point of radium!

Chemistry Data/Noble Mind and Jefferson Lab have the exact same boiling point. This may be because they got it from the same source. Since Chemistry Data/Noble Mind is one of the first sites to pop up on google, Jefferson Lab may have gotten their information from them. A similar thing may have happened with Web Elements and Chemical Elements. These sites are all too different for me to put my trust in any of them. Still, I could assume that the boiling point of radium is at least somewhere between 1000 C and 2000 C.

3) What is the mass of Pluto?

This questions also had a lot of answers. There were so many in fact, that I decided to create a range.

Google: 1.3 × 1022 kilograms
http://www.google.com/search?client=safari&rls=en&q=mass+of+pluto&ie=UTF-8&oe=UTF-8

Science Park Etacude: 1.27 X 1022 kg
or 0.0021 Earths
http://sciencepark.etacude.com/astronomy/pluto.php

One of the reasons their are so many calculations could be because some sources may include pluto's moon in the mass. This is mentioned at the site:

http://frank.harvard.edu/~howard/planets/pluto_mass.html,
where someone else is also on a quest for the mass of pluto.

He checked the following references and posted the following data:

Pluto's Mass (M_E)  Source
	******************************************************************************************
	0.9		    Astrophysical Quantities (Allen - 1955)
	0.002		    The Evolving Universe: An Introduction to Astronomy (Goldsmith - 1982)
	0.0023		    The Physical Universe: An Introduction to Astronomy (Shu - 1982)
	0.02561		    Astrophysical Data: Planets & Stars (Lang - 1992)
	0.0018		    Intro to Astronomy & Astrophysics (Zelik & Gregory - 1998)
	0.0025		    Astronomy: From the Earth to the Universe (Pasachoff - 1998)
	0.002200	    Allen's Astrophysical Quantities (Cox - 2000)
	0.0022		    Life in the Universe (Bennett, Shostak & Jakosky - 2003)

With that information, and using data from the sites above, I would say the mass of pluto is somewhere in the range of:
.0025 and .0015 times the earth's mass. From the chart, I am ignoring the first entry, because it way off from the others, and is from 1955. The author of the site mentions the fourth entry (which is also way off) may be a typo from the book.

4) How many moons does Uranus have?

Uranus has many moons, some of which have names of the characters in "A Midsummer Night's Dream".

Kids Astronomy - 21 Moons
http://www.kidsastronomy.com/uranus/moons.htm

Solar Views - At least 22 Moons
http://www.solarviews.com/eng/uranus.htm

Windows to the Universe - 27 Moons
http://www.windows.ucar.edu/tour/link=/uranus/moons_and_rings.html

NASA - 27 Moons
http://solarsystem.nasa.gov/planets/profile.cfm?Object=Uranus&Display=Moons

NASA claims Uranus has at least 27 moons, which they discovered through the use of the Hubble Telescope. I'm putting my money on NASA- the other sites may have needed to be updated, or just had the wrong information.

5) What is the exact population of North Carolina as of October 1st, 2006?

Technically there is no practical way for me to figure out the exact population of North Carolina.
However, NC People (http://www.classbrain.com/artstate/publish/article_1254.shtml) has an estimate of 8,683,242 people in North Carolina for 2005.

6) On what date did Shodor receive approval from the State of North
Carolina for it's Articles of Incorporation?

Shodor received approval from the state of NC for it's Articles of Incorporation on May 24th, 1994.
This was on the website of North Carolina's Department of the Secretary of State.