News articles tagged with 'fossil' (Page 2)
Has the Earth's sixth mass extinction already arrived?
— 3 Mar 2011 13:44 | EnvironmentWith the steep decline in populations of many animal species, from frogs and fish to tigers, some scientists have warned that Earth is on the brink of a mass extinction like those that…
Mio-Pliocene faunal exchanges and African biogeography: The record of fossil bovids
— 17 Feb 2011 19:00 | Geology and palaeontologyNew fossil discoveries have provided a glimpse into the biogeographic configuration of Africa over the last seven million years…
Biological anthropologists question claims for human ancestry
— 17 Feb 2011 18:57 | Biology'Too simple' and 'not so fast' suggest biological anthropologists from the George Washington University and New York University about the origins of human ancestry. In the upcoming…
Oldest fossils of large seaweeds, possible animals tell story about oxygen in an ancient ocean
— 17 Feb 2011 18:39 | Geology and palaeontologyAlmost 600 million years ago, before the rampant evolution of diverse life forms known as the Cambrian explosion, a community of seaweeds and worm-like animals lived in a quiet deep-water…
Thawing permafrost likely will accelerate global warming
— 17 Feb 2011 18:12 | EnvironmentUp to two-thirds of Earth's permafrost likely will disappear by 2200 as a result of warming temperatures, unleashing vast quantities of carbon into the atmosphere, says a new study…
Foot bone suggests Lucy's kin had arched foot, for walking
— 11 Feb 2011 16:09 | Geology and palaeontologyA foot bone from the early human relative Australopithecus afarensis suggests that these hominids had stiff, arched feet, like we do. These findings support the hypothesis that A. afarensis…
Ancient teeth raise new questions about the origins of modern man
— 10 Feb 2011 18:40 | Geology and palaeontologyEight small teeth found in a cave near Rosh Haain, central Israel, are raising big questions about the earliest existence of humans and where we may have originated, says Binghamton…
X-rays reveal hidden leg of an ancient snake
— 8 Feb 2011 17:33 | Geology and palaeontologyA novel X-ray imaging technology is helping scientists better understand how in the course of evolution snakes have lost their legs. The researchers hope the new data will help resolve…
Paper archives reveal pollution's history
— 8 Feb 2011 17:15 | EnvironmentSome of the history preserved in old tomes and newspapers may be hiding in between the lines of print. A Weizmann Institute scientist has found that the paper in such collections contains…
Unexpected exoskeleton remnants found in Palaeozoic fossils
— 8 Feb 2011 16:39 | Geology and palaeontologySurprising new research shows that, contrary to conventional belief, remains of chitin-protein complex - structural materials containing protein and polysaccharide - are present in…