Too mellow for our predatory world
...ustained chasing. Darwin had already described the remarkable tameness of these animals, also termed "low wariness", during his voyage on the Beagle in 1835. In marine iguanas living with an intermediate predation risk, it was only the act of being captured that led to increased concentrations of corticosterone...'Lessons learned' highlighted as global politics of HIV/AIDS examined in new research
...s, also lies in the fact that it brings together a remarkable group of scholars to help illuminate "the diverse and lasting impact that HIV/AIDS has had, not only on the health and wellbeing of so many world citizens, but also on relationships between states and citizens and among corporations, governments, and...Small but remarkable fossils found in New Zealand will prompt a major rewrite of prehistory textbooks, showing for the first time that the so-called "land of birds" was once home to mammals as well. The tiny fossilised bones - part of a jaw and a leg - belonged to a uniq...Extreme life, marine style highlights 2006 ocean census
...ery and recording of new species. Among the most remarkable finds: Macro microbe The protozoan that Census explorers of the continental margins discovered in the Nazare Canyon off Portugal differs from the usual protozoans seen swimming in a drop of water under a microscope. The single cell of this fragile...American scientist's research of life's first cells
...he journal Science . "Dr. Chen has accomplished a remarkable effort at forward engineering the possible origins of cellular behavior," said Dr. Donald Kennedy, editor-in-chief of Science . "She created an evolutionary experiment among 'proto-cells' -- vesicles built of membrane materials, some of which contai...Changes in dietary protein may override inherited skeletal abnormalities
...ight of other organs, the researchers found. The remarkable efficacy of a low-protein diet in rescuing skeletal manifestations of a disease caused by increase in ATF4 activity suggested to the researchers that a high-protein diet might similarly reverse skeletal syndromes characterized by a decrease in ATF4 f...How mammals fuel milk production may have implications for cancer
...sity of Pennsylvania School of Medicine. Given its remarkable importance, it has been a relatively understudied field. Our studies demonstrate that Akt1 is required for orchestrating many of the dramatic developmental changes in metabolism that occur in the mammary gland at the transition from pregnancy to la...Newts which regrow their hearts
...sive ability to regenerate and have discovered the remarkable plasticity of newt heart cells. As mammals, and therefore also humans, do not have this ability, the findings could contribute to new cell therapies for patients with damaged organs (Journal of Cell Science, 2006). The red-spotted newt, Notophthalm...Peering into the shadow world of RNA
...f transposons, known as retrotransposons, have the remarkable ability to copy themselves into RNA, translate themselves back into DNA, and then reinsert themselves back into the DNA at the new location. If their insertion spot happens to be within the coding region for a vital gene, the result can be destructio...Humpback whales have brain cells also found in humans
...at includes whales and dolphins, have demonstrated remarkable auditory and communicative abilities, as well as complex social behaviors. A new study published online November 27, 2006 in The Anatomical Record, the official journal of the American Association of Anatomists,compared a humpback whale brain with br...Fragmentation rapidly erodes Amazonian biodiversity
...The most striking finding, say the authors, is the remarkable speed at which tree communities are changing in forest fragments. Rainforest trees can live for centuries, even millennia, said Laurance, so none of us expected things to change too fast. But in just two decadesa wink of time for a thousand year...'Nymph of the sea' reveals remarkable brood
... meaning' a pregnant young woman of the sea'. This remarkable discovery provides an unequivocal and unique view of parental brood care in the invertebrate fossil record, it allows gender to be determined in an animal as old as the Silurian period of geological time, and indicates a remarkably conserved egg broo...Extraordinary life found around deep-sea gas seeps
...ile and Japan. The seeps off New Zealand are also remarkable in the sheer extent of their chemosynthetic communities,' says Dr Baco-Taylor. The team pinpointed potential seep sites using sophisticated sonar to map seafloor topography and substrate and to detect plumes of methane-enriched water. The scientists...Pressured by predators, lizards see rapid shift in natural selection
...he ground to higher perches apparently caused this remarkable reversal, Losos says, adding that behavioral flexibility may often drive extremely rapid shifts in evolution. "Evolutionary biology is by its nature an historical science, but the combination of microevolutionary experimentation and macroevolutiona...Nanotech tools yield DNA transcription breakthrough
... pulling the unwound DNA strands into itself. This remarkable mechanism, termed "DNA scrunching," enables the machine to acquire and accumulate the energy it needs to break its binding interactions with the initial binding site, and to begin to move down the gene. "Our findings were made possible by newly de......he determination of those who fought to preserve a remarkable place." "It is an absorbing and timely conservation history of ANWR, " according to George Schaller, vice-president, Wildlife Conservation Society. "Kaye describes the wildlife, scientific, recreational and symbolic values that motivated those of u...Different coat color may not mean different species for lemurs
...ies recognition in the mouse lemurs. "There is a remarkable amount of diversity in primates," said Heckman. "We wanted to more thoroughly document this with both morphologic and genetic analysis."...Genes offer researchers a 'crystal ball' to help them prevent, diagnose and treat cancer
... lung diseases," said Spivack. "But what is rather remarkable here is that DNA can be tested in the air that comes from the lungs and airways, and that it might be possible to use this in diagnosis of lung cancer in particular, and gene-dysregulation disorders of the lung, in general." The DNA is believed to ...Decoded sea urchin genome shows surprising relationship to humans
... likely function in sensory processes there. It is remarkable that the same sensory proteins are used in organs with such different structures in sea urchins and man, said Sodergren. "The sea urchin reminds us of the underlying unity of all life on earth," she said. "It is a similar set of genes and proteins ...