(Swedish Research Council) A new investigation put in evidence the key role of cod as regulator of the whole Baltic Sea ecosystem. The study shows that when the cod population in the central Baltic increases, it spreads into larger areas and spills over into adjacent marginal systems where it usually ...

(Phys.org) -- Nature teems with examples of evolutionary arms races between predators and prey, with the predator species gradually evolving a new mode of attack for each defensive adaptation that arises in the prey species.

Volunteers and Navy personnel returned a 12-tonne whale to the sea after it became stranded on a beach in the southwestern Mexican city of Oaxaca, officials said Saturday.

Research scientists working for the U.S. Geological Survey report that some Alaska polar bears are losing their fur.

(AP) -- A Washington state wildlife spokesman says two salmon-eating California sea lions have been captured this week at Bonneville Dam and killed by lethal injection.

International scientists have shown that a dramatic sea-level rise occurred at the onset of the first warm period of the last deglaciation, known as the Blling warming, approximately 14,600 years ago. This event, referred to as Melt-Water Pulse 1A (MWP-1A), corresponds to a rapid collapse of massive ice sheets 14,600 ...

Three-spine sticklebacks aren't as pretty as many aquarium fish, and anglers don't fantasize about hooking one. But biologists treasure these small fish for what they are revealing about the genetic changes that drive evolution. Now, researchers have sequenced the stickleback genome for the first time, and they have discovered that ...

HUNTSVILLE, Ala. -- New work from the HudsonAlpha Institute for Biotechnology, with collaborators at Stanford University and five other groups, has pinpointed evolution in action. By determining genomic sequence from many groups of stickleback fish, the scientists were able to show specific genomic changes leading to the ...

(PhysOrg.com) -- Researchers attempting to map the various types of fish living in the eastern Gulf of Mexico have been using an automated sea glider, which is a small autonomous submarine outfitted with a hydrophone. The sea glider zigs and zags its way around underwater at different depths recording noises ...

Scientists have shed new light on the evolution of deep-sea creatures by looking at the genes of one shrimp-like species, rather than their physical characteristics.

The seas are creeping higher as the planet warms. But how high could they go? Projections for the year 2100 range from inches to several feet, or even more. The sub-tropical islands of Bermuda and the Bahamas are two seemingly unlikely places scientists have ...

If you go far enough back along the branch of the evolutionary tree of life that humans sit on, you get to the part near the trunk where verterbrates (creatures with spines) split from invertebrates (creatures without spines). Current theories suggest the complex brain we share with ...