"A biotech company plans to announce Tuesday that it has won a patent on a genetically altered bacterium that converts sunlight and carbon dioxide into ingredients of diesel fuel, a step that could provide a new pathway for making ethanol or a diesel replacement that skips several cumbersome and expensive steps in existing methods."

"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 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."

"Two Greenpeace activists were given suspended jail sentences in Japan Monday for stealing whale meat they said was going to be consumed illegally."

"A federal judge has ordered the U.S. Fish and Wildlife Service to revise a Bush administration recovery plan for the threatened northern spotted owl, and the agency said today it intends to release a draft of the revision next week."

"U.S. health officials are set to rule on whether a faster-growing, genetically engineered fish is safe to eat in a decision that could deliver the first altered animal food to consumers' dinner plates."

The algae mats floating in a stretch of California's Bear River look pretty disgusting. The "didymo" -- short for its scientific name, Didymosphenia geminata -- looks something like shredded toilet paper. It also resembles another of its nicknames: "rock snot." Its behavior has changed in recent years, and it is spreading. It appears in trout streams and threatens trout. New Zealand has banned felt-soled wading boots (often used by fly fishers), which can spread it.

"Chesapeake oysters are a succulent treat that for centuries have been loved almost to extinction.  But some scientists and business people are making headway in bringing back the bivalve, for the sake of oyster lovers and the bay."