Scientists disagree on the risks of hydraulic fracking, a process that injects large volumes of water, sand and chemicals underground to break rock apart and free the natural gas.
Demonstrators
in the United States and elsewhere are protesting the natural gas drilling
process known as fracking.
Participants
in the "Global Frackdown" campaign Saturday rallied in cities and
posted photos on social media websites showing mostly small groups.
But
organizer Mark Schlosberg said he thought the protests went well and he pointed
to photos showing larger demonstrations in South Africa and France as well as
higher turnouts in cities in California, Colorado and New York.
Scientists disagree on the
risks of hydraulic fracking, a process that injects large volumes of water,
sand and chemicals underground to break rock apart and free the natural gas.
Federal and many state regulators say fracking can be done safely. But
opponents say the process threatens public health and the environment.