Evolution: How birds spread around the globedoi:10.1038/528311bNature ResearchNature
BEIJING, Aug. 2 (Xinhua) -- A team of Chinese paleontologists has made a significant discovery by identifying remnants of a vegetable diet in the stomach contents of a 120-million-year-old fossilized bird found in northeastern China. The findings, published recently in the journal Nature Communi...
In this example, you can see evolution at work. A random DNA mutation created an E. coli cell that is unique. The cell is unaffected by the antibiotic that kills all of its neighbors. This unique cell, in the environment of that petri dish, is able to survive. E. coli are about as...
In this example, you can see evolution at work. A random DNA mutation created an E. coli cell that is unique. The cell is unaffected by the antibiotic that kills all of its neighbors. This unique cell, in the environment of that petri dish, is able to survive. E. coli are about as...
turtle embryos are made of undifferentiated cells 乌龟胚胎是由未分化的细胞构成, that become specific cell types, 它们会变成特定的细胞类型, and then organs and tissues, 接着透过基因活动 以及细胞之间的沟通, through gene activity and communication between cells. ...
with their offspring, how they exchange information despite ambient noise, how sound travels underwater, how birds and mammals learn to vocalize, and even how animals express emotion though sound. Finally, Mathevon asks if these vocalizations, complex and expressive as they are, amount to language...
had already collected the perfect fossil samples to test the new model on. "We had sampled Scaniacypselus, related to modern tree swifts, and Primotrogon, ancestor to modern trogons. These groups are iridescent today and have flat and hollow melanosomes. Did their 48-million-year-old ancest...
LONDON, March 24 (Xinhua) -- A 145-million-year-old fossil discovered in China has helped scientists discover for the first time the evolution of bird legs. A report published Wednesday by the University of Manchester has reinforced evidence of how birds evolved gradually from early dinosaurs. ...
The Same Old Song Male humpback whales are known for their long, vocal songs. A humpback's song can last as long as 30 minutes, and can be heard underwater miles away. Photo courtesy NOAA In the past hundred years, the world's attitude toward whales has changed drastically. The animals...
These are the typical framework for any grand strategy but, after a few turns, some of Ara’s more unique features began to make themselves known. One of those is a new turn-based system built around the concept of Simultaneous Turns, where all players effectively perform their actions at ...