The concern focuses on strict new ethics criteria that the National Institutes of Health has proposed. Advocates of stem cell research say that most of the work currently underway passed close ethical scrutiny but that the procedures varied and usually did not match the details specified in the proposed new guidelines.
Scientists say a 47-million-year-old fossil found in Germany may be a key link to explain the evolution of modern human beings.
The fossil, of a young female that probably resembled a modern-day lemur, is described as "the most complete primate fossil ever found."
Paleontologists say a 75-million-year-old turtle fossil uncovered in southern Utah has a clutch of eggs inside, making it the first prehistoric pregnant turtle found in the United States.
At least three eggs are visible from the outside of the fossil, and Montana State University researchers this week have been studying images taken from a CT scan in search of others inside.
TVNL Comment: Shhh......don't show this to the next round of GOP Presidential candidates!
Researchers can continue most experiments on mankind's closest relatives -- chimpanzees, gorillas and orangutans -- after European Union lawmakers watered down proposals to restrict testing.
The EU's executive Commission last year proposed a range of measures to improve the welfare of the 12 million vertebrate animals used in experiments each year, mostly mice and rats.
A molecule that until now existed only in theory has finally been made.
Known as a Rydberg molecule, it is formed through an elusive and extremely weak chemical bond between two atoms. The new type of bonding, reported in Nature, occurs because one of the two atoms in the molecule has an electron very far from its nucleus or centre.
Fossils found in China may give clues to the evolution of Tyrannosaurus rex.
Uncovered near the city of Jiayuguan, the fossil finds come from a novel tyrannosaur dubbed Xiongguanlong baimoensis. The fossils date from the middle of the Cretaceous period, and may be a "missing link", tying the familiar big T rex to its much smaller ancestors.
Hold on to your hats, or in this case, your helmets: Scientists have finally pinpointed the so-called edge of space — the boundary between Earth's atmosphere and outer space.
With data from a new instrument developed by scientists at the University of Calgary, scientists confirmed that space begins 73 miles (118 kilometers) above Earth's surface.
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