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Fossil Moths Show Their True Colors
November 15, 2011 — The brightest hues in nature are produced by tiny patterns in, say, feathers or scales rather than pigments. These so-called "structural colors" are widespread, giving opals their fire, people their ... > full story -
Whiskers Marked Milestone in Evolution of Mammals from Reptiles
November 10, 2011 — New research comparing rats and mice with their distance relatives the marsupial, suggests that moveable whiskers were an important milestone in the evolution of mammals from ... > full story -
No Need to Shrink Guts to Have a Larger Brain
November 9, 2011 — The so-called expensive-tissue hypothesis, which suggests a trade-off between the size of the brain and the size of the digestive tract, has been challenged. Researchers have now shown that brains in ... > full story -
'Saber-Toothed Squirrel': First Known Mammalian Skull from Late Cretaceous in South America
November 2, 2011 — Paleontologists have discovered two skulls from the first known mammal of the early Late Cretaceous period of South America. The fossils break a roughly 60 million-year gap in the currently known ... > full story -
Humans and Climate Contributed to Extinctions of Large Ice Age Mammals, New Study Finds
November 2, 2011 — Both climate change and humans were responsible for the extinction of some large mammals, according to research that is the first of its kind to use genetic, archeological, and climatic data together ... > full storyMore: -
First North American Hunters 1,000 Years Earlier Than Previously Thought, Speared Mastodon Fossil Shows
October 20, 2011 — A new and astonishing chapter has been added to North American prehistory in regards to the first hunters and their hunt for the now extinct giant mammoth-like creatures -- the mastodons. New ... > full storyMore: -
Stranded Dolphins Exhibit Bubbles, and Ability to Recover
October 19, 2011 — Scientists know that the blood and tissues of some deceased beaked whales stranded near naval sonar exercises are riddled with bubbles. It is also well known that human divers can suffer from ... > full story -
Heart Disease Linked to Evolutionary Changes That May Have Protected Early Mammals from Trauma
October 18, 2011 — Can a bird have a heart attack? A new study suggests that cardiovascular disease may be an unfortunate consequence of mammalian evolution. The study demonstrates that the same features of blood ... > full story -
New, Higher Estimates of Endangered Humpback Whales in the North Pacific
October 18, 2011 — Scientists have increased the estimate on the number of humpback whales in the North Pacific Ocean. The increase follows a refined statistical analysis of data compiled in 2008 from the largest whale ... > full story -
Oldest Fossil Rodents in South America Discovered; Find Is 10 Million Years Older and Confirms Animals from Africa
October 11, 2011 — An international team of researchers have found the oldest rodent fossils in South America. The find confirms the animals origin in Africa and contradicts the conclusion that they spread from south ... > full story
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