#21

RedCross American Red Cross 27,075 followers (26 on this list)
Bio Official twitter stream for the American Red Cross. Follow us for disaster and preparedness updates.
Location ÜT: 38.911452,-77.099041
Web http://www.redcross.o...

#22

MakinADream Makin A Dream 24,066 followers (6 on this list)
Bio Making A Dream Come True Inc is a non-profit charity dedicated to helping children with incurable diseases and senior citizens with unmet basic needs.
Location Atlanta, GA
Web http://www.MakinADrea...
Other lists:  charities, children, diseases-and-disorders, senior-citizens

#23

Greenpeace Greenpeace 21,690 followers (12 on this list)
Bio We're an independent global campaigning organisation acting to change attitudes and behavior, to protect the environment and promote peace.
Location Global
Web http://www.greenpeace...
Other lists:  environment, environmentalist, green

#24

NWF National Wildlife 21,520 followers (21 on this list)
Bio The National Wildlife Federation works to inspire Americans to protect wildlife for our children's future. Staff updating:@climateguru @ksuzj @starfocus
Location Washington, DC
Web http://www.nwf.org
Other lists:  biology, conservation, environmentalist, green

#25

CCSeed Richard Reeve 20,794 followers (5 on this list)
Bio student of Jungian psychology, dream analysis, micro-farming, poetry, mythology, hiking, philosophy, art, dreams...
Location New York, the Catskills
Web http://catskillcottag...
Other lists:  farmer, hiking, outdoors, philosophy

#26

djodcouk Oli's Shanghai Blog 18,009 followers (2 on this list)
Bio I'm living the good life in Shanghai, China. Check out my blog @ http://www.djod.co.uk!
Location Shanghai, China
Web http://www.djod.co.uk
Other lists:  beer, massively-multiplayer, off-the-beaten-path, online-dating

#27

HumaneSociety HSUS 17,886 followers (17 on this list)
Bio Official Twitter feed from The Humane Society of the United States. We're celebrating animals and confronting cruelty... all day, every day!
Location Washington, DC
Web http://www.humanesoci...
Other lists:  animal-welfare, animals, pets

#28

McKQuarterly McKinsey Quarterly 17,169 followers (4 on this list)
Bio The business journal of McKinsey & Company. Our goal is to offer new ways of thinking about management in the private, public, and nonprofit sect
Location Global
Web http://www.mckinseyqu...
Other lists:  blogs, business, news

#29

pledgie pledgie 17,136 followers (14 on this list)
Bio A free website to raise money online for yourself or other causes you care about.
Location Kansas City, Kansas
Web http://www.pledgie.co...
Other lists:  fundraising, philanthropy

#30

nature_org Nature Conservancy 15,913 followers (16 on this list)
Bio The Nature Conservancy welcomes you to its official Twitter site! We're a leading conservation organization working for people and nature.
Location 32 countries on Planet Earth
Web http://nature.org
Other lists:  conservation, environment, nature

#31

WWF_Climate WWF_Climate 15,176 followers (9 on this list)
Bio WWF Climate Change Team at the frontlines. Saving us and the planet one tweet at a time!
Location Global
Web http://www.panda.org/...
Other lists:  climatechange, global-warming, green

#32

BFAS Best Friends 14,982 followers (8 on this list)
Bio National animal welfare organization. We run the largest no-kill sanctuary in the US, and do outreach work across the country.
Location Kanab, Utah
Web http://bestfriends.or...
Other lists:  animal-welfare, animals

#33

AmericanCancer American Cancer Soc 14,321 followers (19 on this list)
Bio Together we're saving lives and creating more birthdays by helping you stay well, get well, by finding cures and fighting back. 1-800-ACS-2345
Location United States
Web http://www.cancer.org
Other lists:  birthdays, cancer-awareness, charities, diseases-and-disorders

#34

TheWomensMuseum The Women's Museum 12,851 followers (18 on this list)
Bio Women's history museum highlighting heroines and stories from 1500 to the present. My name is Alyssa and it's nice to tweet you!
Location Dallas, TX
Web http://www.thewomensm...
Other lists:  art-galleries, associations-organizations, daughters, history

#35

JobAngels Guardian Angel 12,044 followers (4 on this list)
Bio Welcome to the #jobangels movement where we ask you to simply help one person find a job!
Location Washington, DC
Web http://www.jobangels....
Other lists:  jobs

#36

StopHunger MAZON 11,803 followers (3 on this list)
Bio MAZON is the leading Jewish anti-hunger organization, devoted to ending hunger among all faiths and backgrounds. (Maintained by Ed Robins, Donor Services Dept.)
Location Los Angeles, CA, USA
Web http://www.mazon.org
Other lists:  jewish, judaism

#37

Philanthropy ChronofPhilanthropy 11,622 followers (55 on this list)
Bio The Chronicle of Philanthropy's official Twitter page, updated by Peter Panepento
Location Washington, D.C.
Web http://philanthropy.c...
Other lists:  philanthropy

#38

BCCF BCC Foundation 11,554 followers (11 on this list)
Bio Black Card Circle Foundation - a voice for the voiceless - is a 100% volunteer IRS recognized 501(c)(3) public charity promoting self-reliance & sustainability.
Location Worldwide
Web http://BlackCardCircl...
Other lists:  charities, charity, sustainability, taxes

#39

ryan_scott Ryan Scott 11,510 followers (20 on this list)
Bio CEO of Causecast.org. Social Entreprenuer, Investor.
Location Los Angeles, CA
Web http://www.causecast....
Other lists:  charity, csr

#40

idealist Idealist 11,483 followers (37 on this list)
Bio Imagine. Connect. Act.
Location New York City
Web http://www.idealist.o...
Other lists:  philanthropy