Tag: "fossil" at biology news
No need to thank dinosaur-killing asteroid for mammalian success
...ly 65 million years ago," Gittleman said. "But the fossil
record, by its very nature, is patchy. We have fou... when you fuse all of the molecular trees with the fossil
evidence, the timing does not work. The preponderance of mammals really didnt take off until 10 to 1...
Battlefield and terrorist explosions pose new health risks
...s of automobiles and the burning of coal and other fossil
fuels, it is an ingredient in photochemical smog. Nitrogen dioxide also is a common indoor air pollutant that is released from gas ranges and other indoor combustion sources. It can cause nose, eye and more serious health problems. Government industr...
Fossil discovery marks earliest record of limbloss in ancient lizard
...ast but that has lost its original function-- in a fossil
lizard. The newly named species--Adriosaurus micro...terrestrial lizards as they returned to water. The fossil
was originally collected during the 19th Century from a limestone quarry in Slovenia. It then sat at...
30th anniversary of the Heinz Maier-Leibnitz Prize
...estimated, and which are crucial for understanding fossil
coral reefs and for understanding and protecting modern coral reefs. The socio-political significance of the projects pursued by Christian Wild and his Emmy Noether independent junior research group, regarding material cycles in warm and cold water c...
Paleontologists discover new mammal from Mesozoic Era
...nodon allini after the Yan Mountains in Hebei, the fossil
was unearthed in the fossil-rich beds of the Yixia...he first Mesozoic mammal recovered from Hebei. The fossil
site is about 300 kilometers outside of Beijing. The researchers discovered that the skull of Yano...
How long is a child a child?
... tooth growth and determined the age at death of a fossil
juvenile from Jebel Irhoud, Morocco. This study re... to the specimen. The team found that the Moroccan fossil
child showed an equivalent degree of tooth development to living human children at the same age. The...
Smithsonian study concludes Caribbean extinctions occurred 2M years after apparent cause
...king only at the time the extinctions occur in the fossil
record, which is what paleontologists normally do,...he Isthmus of Panama and then compared them to the fossil
record from the southwestern Caribbean during the last 10 million years. "Bivalves such as clams and...
Study: Long legs are more efficient
...he animal with longer legs is more efficient." The fossil
record shows that two million years ago, there was a big increase in leg length in early humans. Pontzer suggests that one reason for this increase could have been the energy saved by having longer legs. "If you greatly increase the distance that you...
These legs were made for fighting
...umans and apes, we should not be surprised to find fossil
evidence of aggressive behavior in the ancestors of modern humans," Carrier says. "This is important because we have a real problem with violence in modern society. Part of the problem is that we don't recognize we are relatively violent animals. Man...
Human pubic lice acquired from gorillas gives evolutionary clues
...ion of modern humans, Reed said. Because the human fossil
record is patchy and finding early DNA samples is ...research team extracted DNA from the lice and used fossil
data from humans and gorillas to estimate how long ago these two types of lice shared a common ances...
Despite their heft, many dinosaurs had surprisingly tiny genomes
...d birds, whose bone cells can be measured from the fossil
record. The researchers, at Harvard University and the University of Reading, were led by Chris Organ and Scott V. Edwards, both at Harvard. They report their findings this week in the journal Nature. "We see distinct differences between two majo...
Solar energy conversion offers a solution to help mitigate global warming
...ting the growing threat to the man-made burning of fossil
fuels. Opportunities to increase solar energy conversion as an alternative to fossil
fuels are addressed in the Physics Today article, co-authored by George Crabtree, senior scientist a...
UN, industry, others partner to create world standards for e-scrap recycling, harvesting components
...h monitor requires at least 10 times its weight in fossil
fuels and chemicals to manufacture. This is much m...rator, which only require 12 times their weight in fossil
fuels. Manufacturing a desktop computer and 17-inch CRT monitor uses at least 240 kg (530 lbs) o...
Super-fermenting fungus genome sequenced
...making biofuels more economically competitive with fossil
fuels, there are significant potholes to negotiate. For cellulosic ethanol production, one major detour has being addressed with the characterization of the genetic blueprint of the fungus Pichia stipitis, by the U.S. Department of Energy Joint Geno...
Genome sequencing reveals key to viable ethanol production
...s the promise of a clean, renewable alternative to fossil
fuels, but deriving it from plants is difficult. Producing it from corn is the easiest method, but doing so on a large scale would drive up the price of corn, corn starch, and even tangential foods like beef, since cows are fed on cornnot to mention ...
Improved predictions of warming-induced extinctions sought
...ar on the problem, especially information from the fossil
record of Quaternary ice ages. The authors acknowl... species might in fact be more vulnerable than the fossil
record indicates. ...
Universities in 1.5M drive to cut cost of solar power
... light. Professor O'Brien said: "Alternatives to fossil
fuel-based electricity sources are needed urgently, to reduce the environmental impact of electrical power generation and to secure our supply of electricity in the future. "The widespread implementation of solar electricity requires a significant ...
Climate changes, Cod collapse have altered North Atlantic ecosystems
...rmed by greenhouse gases emitted in the burning of fossil
fuels, and by changing land surfaces. Early signs of this warming have appeared in the Arctic: Since the late 1980s, scientists have noticed that pulses of fresh water from increased precipitation and melting of ice on land and sea in the Arctic have...
ALTRAN: Industry experts address technology challenges at Altran Innovation Conference
...ich hope, by 2012, to be able to compete alongside fossil
fuels as an economically viable alternate source of eco-friendly energy. Other innovations included the "Anybook" an e-book which uses no energy except while downloading books, the "Haulbee", a drone capable of flying at speeds of up to 200km/h while...
Birth rate, competition are major players in hominid extinctions
...und 2.5 million years ago, but disappears from the fossil
record a million years ago. Paranthropus boisei became extinct when it was unable to compete with other mammals. A specialized feeder, Paranthropus boisei dined on hard objects like seeds, tubers and bones. While it had a variety of food sources, ...
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