News tagged with sedimentary layers


Andes Mountains are older than previously believed

Andes Mountains Are Older Than Previously Believed

Space & Earth / Earth Sciences

created May 15, 2009 | popularity 4.9 / 5 (7) | comments 1

(PhysOrg.com) -- The geologic faults responsible for the rise of the eastern Andes mountains in Colombia became active 25 million years ago—18 million years before the previously accepted start date for the ...


1.5 million-year-old fossil humans walked on modern feet (Video)

1.5 million-year-old fossil humans walked on modern feet (Video)

Other Sciences / Archaeology & Fossils

created Feb 26, 2009 | popularity 4.8 / 5 (6) | comments 1

Ancient footprints found at Rutgers' Koobi Fora Field School show that some of the earliest humans walked like us and did so on anatomically modern feet 1.5 million years ago.





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Scientists improve chip memory by stacking cells

Technology / Semiconductors

created Dec 21, 2009 | popularity 4.5 / 5 (17) | comments 3

(PhysOrg.com) -- Scientists at Arizona State University have developed an elegant method for significantly improving the memory capacity of electronic chips.


Graphite oxide at high pressure opens a road to new amazing nano-materials

Nanotechnology / Nanomaterials

created Dec 21, 2009 | popularity 5 / 5 (2) | comments 1

(PhysOrg.com) -- New results by scientists at Umeľ University, Sweden, show that not only water but also alcohol solvents can be inserted to expand the structure of graphite oxide under high pressure conditions. The ...


Ski Runs Are Not Created Equal

Space & Earth / Environment

created Dec 21, 2009 | popularity 5 / 5 (1) | comments 0

(PhysOrg.com) -- Building a new ski run by bulldozing a mountainside rather than only cutting its shrubs and trees is far more damaging ecologically, yet might offer only a week's earlier start to the downhill season, says ...


Poisonous prehistoric 'raptor' discovered

Poisonous prehistoric 'raptor' discovered in China

Other Sciences / Archaeology & Fossils

created Dec 21, 2009 | popularity 4.9 / 5 (12) | comments 1

(PhysOrg.com) -- A group of University of Kansas researchers working with Chinese colleagues have discovered a venomous, birdlike raptor that thrived some 128 million years ago in China. This is the first ...


A New Method of Estimating Stellar Distances

A New Method of Estimating Stellar Distances

Space & Earth / Astronomy

created Dec 21, 2009 | popularity 4.4 / 5 (14) | comments 2

(PhysOrg.com) -- The star Chi Cygni is located about 550 light-years away, in the direction of the constellation of Cygnus the Swan. It is a notable star because, unlike the sun which still burns hydrogen ...


How the daisy got its spots… and why

How the daisy got its spots... and why

Biology / Plants & Animals

created Dec 18, 2009 | popularity 4.5 / 5 (2) | comments 0

Dark spots on flower petals are common across many angiosperm plant families and occur on flowers such as some lilies, orchids, and daisies. Much research has been done on the physiological and behavioral ...


How to Find Signs of Life on Mars

How to Find Signs of Life on Mars

Space & Earth / Space Exploration

created Dec 18, 2009 | popularity 3.7 / 5 (3) | comments 2

By studying the signatures of fossil life on Earth, geobiologists can get a clue of what to look for when hunting for extraterrestrial life on Mars.


Tiny whispering gallery

Tiny whispering gallery: Sensor can detect a single nanoparticle and take its measurement

Physics / Optics & Photonics

created Dec 18, 2009 | popularity 4.7 / 5 (16) | comments 0

(PhysOrg.com) -- Nanotechnology has already made it to the shelves of your local pharmacy and grocery: nanoparticles are found in anti-odor socks, makeup, makeup remover, sunscreen, anti-graffiti paint, home ...


Caltech scientists discover fog on Titan

Scientists discover fog on Titan

Space & Earth / Space Exploration

created Dec 18, 2009 | popularity 4.8 / 5 (11) | comments 2

Saturn's largest moon, Titan, looks to be the only place in the solar system—aside from our home planet, Earth—with copious quantities of liquid (largely, liquid methane and ethane) sitting on its surface. ...


Researchers create new 'smart' nanocapsule delivery system for use in protein therapy

Nanotechnology / Bio & Medicine

created Dec 18, 2009 | popularity 5 / 5 (3) | comments 1

the delivery of healthy proteins directly into human cells to replace malfunctioning proteins — is considered one of the most direct and safe approaches for treating diseases. But its effectiveness has been limited by low ...



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