A two-day antinuclear conference kicked off Saturday in Yokohama with the aim of sharing lessons from the Fukushima crisis and fostering global momentum against atomic power.

"Nuclear power plants are all over the world. In order to deal with this issue, we must create a global network," said Tatsuya Yoshioka, director of the nongovernmental organization Peace Boat, during the opening ceremony for the Global Conference for a Nuclear Power-Free World.

The conference drew thousands of participants to the Pacifico Yokohama convention center, including about 100 experts and activists from 30 countries and nearly 200 domestic groups.