Why are chronospecies only described from fossils? How are sedimentary rocks used in everyday life? How do scientist classify soils? How can scientists tell how closely related two organisms are? How did geology contribute to the theory of evolution?
In the 19th century, scientist Georges Cuvier suggested these giant creatures were reptiles. Leemage/Universal Images Group/Getty Images When naturalists first began studying pterosaur fossils at the turn of the 19th century, they had the same reaction you probably would: What IS that? They did...
so they can't make tools or complex movements," said Wang Xiaoming,a scientist who studies fossils at the Natural History Museum of Los Angeles County in California.But the pseudo-thumb is shaped like a hook(挂钩),and it helps the bear tightly grasp stalks(秆)of bamboo as...
This type ofgerm-line editing has rarely been applied to humans, except in the controversial case in which aChinese scientist infamously generated "CRISPR babies"in violation of regulations. One big reason human germ-line editing has been avoided is that future generations cannot consent to receivin...
I apologize for reclassifying things that do not care what humans call them and are in no way fundamentally altered because we happen to be calling them something else. (Except Triceratops is still Triceratops, but fine keep complaining about that ONE scientist’s not-widely-supported theory if...
aAfter further studying those fossils,Dubois,a Swiss scientist,announced with certainty that so-called “Java Man”was merely an extinct monkey 在进一步学习那些化石以后, Dubois,瑞士科学家,宣布肯定所谓的“爪哇猿人”仅仅是一只绝种猴子[translate] ...
Fossils have revealedmany of the stages in this iconic evolutionary event. The evolutionary tree of species involved in the switch from sea to land has remained stable since the late 20thcentury, even asnew fossils have come to light.
But no matter where you view the eclipse from, you need to do it safely. It's extremely dangerous to look at the sun, even if most of its light is obscured by the moon. Just as a magnifying glass can focus enough sunlight onto a leaf to start a fire, the lens in your eye can ...
"The features are mineralized remains of what appear to be bacteria that lived some 3.77 billion to 4.28 billion years ago," the scientist said. That would be older than some other rock features found in Greenland, which were considered to be the fossils last August....
“Henry Eyring (1901–1981) is undoubtedly the most celebrated scientist produced within the Mormon faith to date. He published over six hundred scientific papers and about a dozen books, and he received almost every prize science has to offer. His theories form the core of modern chemistry.”...