thanks meredith.

"It's totally the Wild West, when what is needed is carefully planned, sustainable development," said Meacham, who runs the Quintana Roo Water Systems Research Center, a local non-profit group that raises consciousness about water issues in schools.
Water conservation will be a key issue when ministers, hydrologists and environmentalists from around the world meet at the World Water Forum in Mexico City from March 16-22.
Meacham says human sewage is pumped deep underground, and that at least one water system in the Yucatan has been polluted with fecal matter. The impact of 250 tonnes of trash dumped in landfills each day has yet to be evaluated.
The hundreds of tourists who dive and snorkel each day in any of a dozen cenotes and caves open to the public are also unwittingly destroying the ecosystems before they can be properly understood, Iliffe says.
"Fish are following the divers into the caves and they gobble up all the life, and they (the caves) are left biologically sterile," he said.
"When you consider that they could possibly lead to a cure for cancer, it is essential to conserve them."