Does the fossil record paint an accurate picture of the history of life? Norwegian geobiologist believes that fossils can tell us a lot about the evolution of life, but also about the evolution of Earth itself.
Environmental Health News Seven continents: Snapshots of troubled species Environmental Health News Research stations have released flame retardants and other pollutants into the pristine environment, contaminating Adelie penguins.
By understanding the secret of how lizards regenerate their tails, researchers may be able to develop ways to stimulate the regeneration of limbs in humans. Now, a team of researchers is one step closer to solving that mystery. The scientists have discovered the genetic “recipe” for lizard tail regeneration, which may come down to using genetic ingredients in just the right mixture and amounts.
Certain forms of collaboration are supposed to be so sophisticated that only the smartest creatures---namely humans and perhaps a few close relatives---are capable of them. Yet this exclusive club has a new and unexpected member: a species of fish, a class of animals seldom associated with high-level intelligence.
A team of scientists at the University of Copenhagen says the tiny organism does not fit into any of the known subdivisions of the animal kingdom.
Such a situation has occurred only a handful of times in the last 100 years.
The organisms, which were originally collected in 1986, are described in the academic journal Plos One.
The authors of the article note several similarities with the bizarre and enigmatic soft-bodied life forms that lived between 635 and 540 million years ago - the span of Earth history known as the Ediacaran Period.
These organisms, too, have proven difficult to categorise and some researchers have even suggested they were failed experiments in multi-cellular life.
Nature World News Clams, Mussels Clean up Ocean Pollutants Nature World News "We are considering using a raft carrying caged native bivalves, which will allow us to monitor the health of the bivalves and also protect them from predators," study...
A new species of the Boophis rappiodes group is described from Madagascar. This green with bright red speckling treefrog is so far only known from the hidden streams of Ankarafa Forest in northwestern part of the island. The new species presents a high genetic divergence and different call but it is highly threatened by the continuing decline in the quality and extent of its habitat.
An excursion into northern Norway aims to collect and analyze common clams – to crack the mysteries of climate change, past and present.History Written in Rings
The living Arctica islandica Wanamaker and colleagues had identified was over 500 years old. Going one step farther, the team was able to use isotopic analysis to track the tug-of-war between Arctic and North Atlantic currents on an annual basis, just by examining the chemicals in the layers of the clam’s shell. Like tree dating (dendrochronology), the science of sclerochronology matches rings – in this case shell rings – among individuals to establish accurate ages. And like dendrochronology, sclerochronology is accurate to the single year, not decades or centuries like ice cores and geologic strata.