Tag: "footprints" at biology news
How to look at dinosaur tracks
... great care should be taken when describing fossil footprints
that have been exposed to subaerial erosion, because the shape, dimensions, and general appearance of the footprint become seriously altered by erosion.? Geologists also must account for whether the step was taken on a sloped surface or on a horizo...
Diminishing dinosaur steps saved by laser and laptop
...a World Heritage Site application. Although the footprints
are imprinted in a vertical cliff face, the surface the dinosaurs travelled across millions of years ago would have been flat. The School of Earth, Atmospheric and Environmental Sciences was the first academic department in the country to acquire ...
Human's ecological footprint in 2015 and Amazonia revealed
...d 20 nations that will have the largest ecological footprints
in 2015, with the United States, China and India, topping the list. According to the study, the greatest absolute increase will occur with China and India, where both population and economic growth, represent 37 percent of the increase in the global...
Trotting with emus to walk with dinosaurs
...say paleontologists studying thousands of dinosaur footprints
at the Red Gulch Dinosaur Tracksite in northern Wyoming. Because they are about the same size, walk on two legs and have similar feet, emus turn out to be the best modern version of the enigmatic reptiles that once trotted along a long-lost coastline...
Alleged 40,000-year-old human footprints in Mexico much, much older than thought
of early Americans found in volcanic rock in Mexic... human presence in the Western Hemisphere - or not footprints
at all, according to a new analysis published this week in Nature. The study was conducted by geolo...
Siberian tigers hang tough
...eave evidence of their presence with their massive footprints
in the snow. With some workers spending months in the field and covering over 21,000 km (13,000 miles) of transects by foot, ski, snowmobile, and car, over 4,100 tracks were recorded, most representing multiple tracks of a single individual. Research...
Can our genes tell the story of our divergence?
...ts predict that both species should harbor genetic footprints
of our divergence ?the subject of a recent study in the premier open-access journal PLoS Biology. One way to find such genetic signatures is to search for genes that reveal signs of positive natural selection. The assumption is that genes touched by...
Implanted Devices Detect High-Risk Heart Failure Patients
...in heart rate response," Gilliam explained. "These footprints
provide us with an unbiased ?distinct from the patient's perception ?look at how the patient is truly doing. It is an objective finding that you can look at and easily understand." Gilliam pointed out that the cardiologists are "in uncharted waters"...