One of the world's largest tiger populations could disappear by the end of this century as rising sea levels caused by climate change destroy their habitat along the coast of Bangladesh in an area known as the Sundarbans, according to a new WWF-led study published in the journal Climatic Change.

Tigers are among the world's most threatened species, with only an estimated 3,200 remaining in the wild. WWF officials said the threats facing these Royal Bengal tigers and other iconic species around the world highlight the need for urgent international action to reduce greenhouse gas emissions.

"If we don't take steps to address the impacts of climate change on the Sundarbans, the only way its tigers will survive this century is with scuba gear," said Colby Loucks, WWF-US deputy director of conservation science and the lead author of the study Sea Level Rise and Tigers: Predicted Impacts to Bangladesh's Sundarbans Mangroves. "Tigers are a highly adaptable species, thriving from the snowy forests of Russia to the tropical forests of Indonesia.

"The projected sea level rise in the Sundarbans will likely outpace the tiger's ability to adapt." Read the rest of this entry »

Feeling rundown? Try laughing more. Some researchers think laughter just might be the best medicine, helping you feel better and putting that spring back in your step.

"I believe that if people can get more laughter in their lives, they are a lot better off," says Steve Wilson, MA, CSP, a psychologist and laugh therapist. "They might be healthier too."

Yet researchers aren't sure if it's actually the act of laughing that makes people feel better. A good sense of humor, a positive attitude, and the support of friends and family might play a role, too.

"The definitive research into the potential health benefits of laughter just hasn't been done yet," says Robert R. Provine, professor of psychology and neuroscience at the University of Maryland, Baltimore County and author of Laughter: A Scientific Investigation.

But while we don't know for sure that laughter helps people feel better, it certainly isn't hurting. Read the rest of this entry »