Scripps research scientists identify infertility molecule
...egg is fertilized and made into an embryo, it must descend to the womb and implant there, where it will grow into a fetus. But the factors that control whether an embryo is able to implant successfully inside a womb have not been known. Now Chun and his colleagues have discovered a new molecul...Killer dinosaurs turned vegetarian
...tah Museum of Natural History. Falcarius did not descend directly from Velociraptor, but both had a common, yet-undiscovered ancestor, says study co-author and paleontologist Scott Sampson, chief curator at the Utah Museum of Natural History and an associate professor of geology and geophysics at the Unive...Cells from amniotic fluid used to tissue-engineer a new trachea
...ted mesenchymal stem cells. Mesenchymal stem cells descend directly from embryonic stem cells and are abundant in the amniotic fluid. They specialize in making connective tissues, including muscle, bone, cartilage, fat and tendon. Fauza's team multiplied the amniotic mesenchymal cells in culture, then "seede...Scripps marine research physiologist pioneer to receive lifetime achievement award
... which they respond to changes in pressure as they descend and resurface. Kooyman's travels have led him to study the behaviors of a host of animals. In addition to his work with seals and other pinnipeds, his extensive work recording the behavior of emperor penguins helped him identify them as a harbinger o...A new tree of life allows a closer look at the origin of species
...expertise to the tree of life. Since all organisms descend from the same ancestor, they share some common genes. Francesca Ciccarelli and Tobias Doerks of Bork's group managed to identify 31 genes with clear relatives in 191 organisms, ranging from bacteria to humans, to reconstruct their relationships. "Ev...Scientists fly in for maggot fest
...Europe, the United States, Japan and South America descend on the city to talk about their research on fruit-fly (Drosophila) larvae. The three-day event has been organised by Dr Matthew Cobb, a lecturer in animal behaviour in the University's Faculty of Life Sciences whose interest lies in the maggots' sens...Fish can determine their social rank by observation alone, study finds
...ts are unable to hold territories and consequently descend in social status," the authors wrote. "Success in aggressive bouts is therefore crucial to male reproductive fitness, and the ability to infer the relative strength of rivals before engaging them in potentially costly fights should be highly adaptive...FSU anthropologist confirms 'Hobbit' indeed a separate species
...on: Where did it come from?" she said. "Who did it descend from, who are its relatives, and what does it say about human evolution? That's the real excitement about this discovery." ...Is there a pilot in the insect?
...ts. It accounts for the fact not only that insects descend facing a headwind and ascend with a tailwind, but also that honeybees land with a constant slope and drown when crossing mirror-smooth water1. Behind this astonishing behavior, hidden in the insect's cockpit, are movement detector neurons that act as...The origin of the brain lies in a worm
... diffusely over their body. Yet, all these species descend from a common ancestor called Urbilateria. If this ancestor already possessed a nervous system, what it might have looked like and how it gave rise to the diversity of nervous systems seen in animals today is what Detlev Arendt and his group study at...New study warns limited carbon market puts 20 percent of tropical forest at risk
...es that cause deforestation elsewhere will quickly descend on regions that so far have avoided significant loss, the authors say. Cutting and burning tropical forests releases the atmospheric carbon they store, contributing significantly to global climate change. The HFLD countries contain 20 percent of Ea...