Since 1941 the National Speleological Society has been dedicated to protecting, studying, and exploring caves. With 8,000 members we are the largest cave focused membership …

The National Speleological Society (NSS) is an organization formed in 1941 to advance the exploration, conservation, study, and understanding of caves in the United States. Originally …

Founded as the National Space Institute (1974) and L5 Society (1975), which merged to form NSS in 1987 (see merger proclamation), NSS is widely acknowledged as the preeminent …

Founded in 1941, the NSS is the largest membership organization dedicated to caves & caving. Composed of over 8,000 members and 250+ local chapters - known as grottos - we work to …

With more than 8,000 members and 250 Grottos (local chapters), it's the world's largest organization dedicated to fostering fellowship among cavers and advancing the exploration, …

5 days ago · The National Space Society (NSS) supports the White House’s recent Ensuring American Space Superiority executive order, a sweeping national policy directive that reaffirms …

At the direction of the BOG, the annual conservation issue of the NSS News is provided to the public. Recent issues are available now, just click the graphic at left!

NSS is a registered 501 (c) (3) nonprofit organization.

Contributors to the NSS Blog are unpaid volunteers. Unless specifically labeled an NSS position or press release, all blog posts represent the views of the author and not of NSS, even if …

The 2025 US National Security Strategy On 5 December 2025, the White House released the 2025 United States (US) National Security Strategy (NSS). The NSS lays out the US foreign …