Prospecting macroalgae (seaweeds) as feedstocks for bioconversion into biofuels and commodity chemical compounds is limited primarily by the availability of tractable microorganisms that can metabolize alginate polysaccharides. Here, we present the discovery of a 36–kilo–base pair DNA fragment from Vibrio splendidus encoding enzymes for alginate transport and metabolism. The genomic integration of this ensemble, together with an engineered system for extracellular alginate depolymerization, generated a microbial platform that can simultaneously degrade, uptake, and metabolize alginate.

Firefighters are making progress against a major blaze in one of Chile`s most spectacular national parks, the government said on Sunday, and the Israeli tourist accused of setting the fire denied g

The rise of the farmed fish industry in recent years has been accompanied by the emergence of many infectious diseases of fish.

A strong 6.6-magnitude earthquake rattled Bolivia on Tuesday and was also felt in Peru and Chile, but the epicenter was deep underground and there were no immediate reports of damage or casualties.

The US Geographical Survey said the quake's epicenter was 345 miles (556 kilometers) underground and located 37 miles south-southwest of Trinidad, the capital of Bolivia's northern Beni region.

U.S.

Parasitoid disturbance populations in agroecosystems can be maintained through the provision of habitat refuges with host resources. However, specialized herbivores that feed on different host plants have been shown to form host-specialized races. Parasitoids may subsequently specialize on these herbivore host races and therefore prefer parasitizing insects from the refuge, avoiding foraging on the crop.

BHP Billiton moved closer to an estimated $20 billion to $30 billion expansion of its Olympic Dam copper and uranium mine after winning environmental approvals on Monday for the project in the dese

Planet At Right Distance From Its Star For Water To Exist

Climate change appears to be forcing many of the world's creatures to migrate to more favourable locales up to three times faster than previously believed, a study said on August 18.

A virus that has killed millions of salmon in Chile and ravaged the fish farming industry there was probably brought over from Norway, a major salmon producer has acknowledged.

Pages