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New Theory on Origin of Birds: Enlarged Skeletal Muscles
June 22, 2011 — A new theory of the origin of birds, traditionally believed to be driven by the evolution of flight, is now being credited to the emergence of enlarged skeletal muscles in birds. Their upright ... > full story -
Earliest Art in the Americas: Ice Age Image of Mammoth or Mastodon Found in Florida
June 21, 2011 — Researchers have discovered a bone fragment, approximately 13,000 years old, in Florida with an incised image of a mammoth or mastodon. This engraving is the oldest and only known example of Ice Age ... > full story -
Lyme Disease Tick Adapts to Life on the (Fragmented) Prairie
June 21, 2011 — A new study offers a detailed look at the status of Lyme disease in Central Illinois and suggests that deer ticks and the Lyme disease bacteria they host are more adaptable to new habitats than ... > full story -
Old, Large, Living Trees Must Be Left Standing to Protect Nesting Animals, Study Shows
June 16, 2011 — Old trees must be protected to save the homes of more than 1,000 different bird and mammal species who nest, says a new study. Most animals can't carve out their own tree holes and rely on holes ... > full story -
Animal Instincts: Why Do Unhappy Consumers Prefer Tactile Sensations?
June 15, 2011 — A new study explains why sad people are more likely to want to hug a teddy bear than seek out a visual experience such as looking at art. Hint: it has to do with our mammalian ... > full story -
Chillingham Cattle Cowed by Climate Change
June 13, 2011 — Spring flowers are opening sooner and songbirds breeding earlier in the year, but scientists know little about how climate change is affecting phenology -- the timing of key biological events -- in ... > full story -
Researchers Solve Mammoth Evolutionary Puzzle: The Woollies Weren't Picky, Happy to Interbreed
May 31, 2011 — A DNA-based study sheds new light on the complex evolutionary history of the woolly mammoth, suggesting it mated with a completely different and much larger species. The research found the woolly ... > full story -
Climate Change and Marine Mammals: Winners and Losers
May 27, 2011 — Current hotspots of marine mammal diversity are concentrated in the temperate waters of the southern hemisphere, and the number of cetacean and pinniped species will likely remain highest in these ... > full story -
Dual Parasitic Infections Deadly to Marine Mammals
May 24, 2011 — A study of tissue samples from 161 marine mammals that died between 2004 and 2009 in the Pacific Northwest reveals an association between severe illness and co-infection with two kinds of parasites ... > full story -
Birch Mouse Ancestor Discovered in Inner Mongolia Is New Species of Rare 'Living Fossil'
May 24, 2011 — Fossils from Inner Mongolia are a new species of birch mice, Sicista primus. This significantly extends the geologic history of the rodent family that includes jumping mice. The teeth from sediments ... > full story
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