the researchers at keio university in tokyo had rats inhale the gas immediately after they were resuscitated. they say about 70% of the animals were alive a week after the experiment. they say the survival rate for those that did not inhale the gas was under 40%. the researchers say the rats that inhaled hydrogen also had less damage to nerve cells in the brain. emergency medical workers usually try to lower the body temperatures of patients without heartbeat to prevent brain damage. the keio scientists say it's much easier to use hydrogen gas. they want to conduct clinical tests on humans to confirm these effects. >> translator: we expect that the brain damage will be decreased from inhaling hydrogen gas. >> the associate professor says it is important to protect the brain so that its functions can return to normal after the patient's heart starts beating again. >>> tourism officials in china are hoping to turn the site of the apec summit into a vacation hot spot. they're seeing people from around the country coming to stay at yen ki lake and they now looking to land even more visitors from