The Comprehensive Nuclear-Test-Ban Treaty (CTBT) bans nuclear explosions everywhere - making it very difficult for countries to develop nuclear bombs for the first time or, for countries that already have them, to make more powerful weapons. It also helps protect humans, animals and plants from the damage caused by radioactivity from nuclear explosions.
This week, scientists from around the world are meeting in Vienna, Austria for the CTBT Science and Technology Conference. Get more details here: https://www.ctbto.org/SnT2019