"Asia's tiger population could be close to extinction with fewer than 3,500 tigers remaining in the wild and most clustered in fragmented areas making up less than 7 percent of their former range in Asia, a study says. The study in the latest issue of the online journal PLoS Biology says saving tigers living in 42 sites across Asia from poachers, illegal loggers and the wildlife trade is crucial to prevent the species becoming extinct in the wild."

"Decades of overfishing have deprived the food industry of billions of dollars in revenue and the world of fish that could have helped feed undernourished countries, according to a series of studies released on Tuesday."

"A trio of potentially dangerous storms swirled over the Atlantic Ocean on Tuesday, as Tropical Storm Karl formed in the Caribbean on a path that could take it over oil-production facilities in Mexico's Bay of Campeche."

"From foxes to whales to walruses to plankton, Arctic species are being pushed toward extinction by rapid climate change, finds a new report by two conservation groups."

"The federal government declared in April that basking sharks in the Pacific Ocean are a 'species of concern,' which means the government doesn't yet have enough information to say the giant fish is threatened or endangered, but it might be."

"The ice around the North Pole has experienced another severe meltdown this year, German scientists said."

"One-hundred-foot-tall waves can be nightmarish ship-swallowing monsters — or seductive sirens that tempt the adventurous. But it wasn't until 15 years ago that scientists were even able to prove that such giant rogue waves actually existed."

The Atlantic bluefin tuna, one of the wildest of wild fish, is in decline. Paradoxically, aquaculture scientists say a recent breakthrough in captive breeding of the fish may help save it.

"The world should safeguard coral reefs with networks of small no-fishing zones to confront threats such as climate change, and shift from favoring single, big protected areas, a U.N. study showed."

"Concern for the survival of albatrosses, penguins, and other marine birds has drawn scientists from 40 countries to first World Seabird Conference in Victoria. The five-day event opened Tuesday, sponsored by 26 professional seabird groups and societies from around the world."