Tag: "fossil" at biology news
Penn leads $4 million grant to study gene-environment interactions in lung cancer
...ocarbons (PAHs). PAHs are also produced by burning fossil
fuels and are ubiquitous environmental pollutants. PAHs are present in soot that is found at relatively high concentrations in the air we breathe in urban environments, explains Penning. Exposure to environmental PAHs may also account for lung-cancer...
Volcanic eruptions, ancient global warming linked
...g period came through correlations with the marine fossil
record. Dramatic changes in the carbon-isotopic composition of the ocean, corroded plankton shells, and the extinction of some bottom-dwelling organisms characterize the PETM. This interval occurred about 300,000 years before the ash layer, at the pe...
Satellites play vital role in understanding the carbon cycle
...mping extra carbon dioxide into the atmosphere, by fossil
fuel burning and deforestation, is well known. Because of this, atmospheric carbon dioxide concentrations are higher today than they have been over the last half-million years or so. Scientists are now using satellite instruments to locate sinks and ...
Meeting the ethanol challenge: Scientists use supercomputer to target cellulose bottleneck
...ss a realistic 'carbon neutral' alternative to the fossil
petroleum used today for transportation fuels." The results were reported in the April 12 online edition of the Protein Engineering, Design and Selection journal, which also featured visualizations of the results on the cover. A convergence of fa...
New report explores nanotechnology's future
...el-cell powered cars and trucks, helping to render fossil
fuels obsolete as an energy source. Relevant to nearly every industry, nanotechnology is considered a "platform technology," the report says, because "it readily merges and converges with other technologies and could change how we do just about eve...
2-protein team would be lost without each other
...ard engineering plants that may be used to replace fossil
fuels," said Duke biologist Philip Benfey. "It's also another step toward a better understanding of how humans work." This emerging picture of the complex interplay between genes and proteins is the latest finding to come from Benfey's examination ...
Renewable hydrogen energy -- an answer to the energy crisis
...orlds dependence on non-renewable carbon-producing fossil
fuels because it is clean, portable and versatile.... up the development of competitive alternatives to fossil
fuels. It will significantly strengthen the UKs contribution to the international effort to deliver ...
Robust time estimation reconciles views of the antiquity of placental mammals
...t with quantitative analysis of the North American fossil
record and traditional morphological views. They emphasize the necessity to scrutinize the implicit assumptions adopted by the models of molecular evolution and to develop procedures which rely little on those assumptions. ...
Ancient amphibians evolved a bite before migrating to dry land
...y ancestors, we were able to determine whether the fossil
species fed by suction or by biting." Using this...s, suggesting that, ironically, direct analysis of fossil
jaws would be a less precise means of determining the feeding methods of extinct species, Markey say...
Massive coral death atrributed to earthquake
... processes that until now we could only explore on fossil
reefs" says Dr Baird. Dr Campbell adds "The news from Simeulue is not all bad. At many sites, the worst affected species are beginning to re-colonize the shallow reef areas. The reefs appear to be returning to what they looked like before the earth...
Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex
...The scraps of dinosaur protein were wrested from a fossil
femur discovered by John Horner, of the Museum of ...pecies," said Cantley. Still, it may be the rare fossil
that is as pristinely preserved by the environment as the T. rex and mastodon specimens analyzed in ...
Ancient T. rex and mastodon protein fragments discovered, sequenced
...tence of protein in soft tissue recovered from the fossil
bones of a 68 million-year-old Tyrannosaurus rex (...heir results may change the way people think about fossil
preservation and present a new method for studying diseases in which identification of proteins is i...
Massive coral death attributed to earthquake
... processes that until now we could only explore on fossil
reefs" says Dr Baird. Dr Campbell adds "The news from Simeulue is not all bad. At many sites, the worst affected species are beginning to re-colonize the shallow reef areas. The reefs appear to be returning to what they looked like before the earthq...
Do we need a paradigm change? Disputing coevolution in herbivorous insects
...st Cretaceous. This finding is consistent with the fossil
record of Chrysomelidae which is much younger than that of angiosperms. In addition, chrysomelids feeding on the ancient lineage of monocotyledons (grasses, palms, etc.) have arisen at least on two occasions, refuting earlier claims of their monophyl...
Biofuels: More than just ethanol
...des corn, to provide an alternate energy source to fossil
fuels. Scientists studied the greenhouse gas emis...omputer model data with estimates of the amount of fossil
fuels used to grow and produce crop biofuels." Adler, Del Grosso and Parton used the Daycent bioge...
Alternative-fuels pioneer receives first-ever $100,000 Lemelson-MIT Award for Sustainability
...vocacy of biofuels as a sustainable alternative to fossil
fuels. Decades ago, Lee Lynd started doing some...ted quantities and consumes substantial amounts of fossil
energy as currently produced. On the other hand, Lynd observed, cellulose is the most abundant organ...
Why are there so many more species of insects? Because insects have been here longer
...ng species using genetic information) and from the fossil
record to ask whether groups with more species today had accumulated species at faster rates. Animals as diverse as mollusks, insects, spiders, fish, amphibians, reptiles, birds, and mammals appear to have accumulated new species at surprisingly simi...
Case Western researcher, international team call for better global warming forecasting
...llion years little extinction is documented in the fossil
record. "The simultaneous widespread and justifi...king predictions about future outcomes Examine fossil
records to aid in understanding how some plant and animal species have adapted to changes in their ...
The delayed rise of present-day mammals
...lationships, the researchers used DNA data and the fossil
record to estimate diversification rates and work backward to establish when specific groups of mammals first appeared on Earth. The study, which included work by Robin Beck, a PhD student in the UNSW School of Biological, Earth and Environmental ...
Dinosaur extinction didn't cause the rise of present-day mammals, claim researchers
...a decade to compile the tree of life from existing fossil
records and new molecular analyses. They show that many of the genetic 'ancestors' of the mammals we see around us today existed 85 million years ago, and survived the meteor impact that is thought to have killed the dinosaurs. However, throughout th...
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