Big brains are pricey, guppy study shows

Bigger brains can make animals, well, brainier, but that boost in brain size and ability comes at a price. That's according to new evidence reported on January 3rd in Current Biology, in which researchers artificially selected ...

Why are so many fairy-wrens blue?

(Phys.org)—Researchers have long tried to explain the enormous diversity in colour of birds, and a new study is giving insights into why the humble fairy-wren, a colourful Australian bird, is radiantly blue.

Puppies don't pick up on yawns

Do you get tired when others yawn? Does your dog get tired when you yawn? New research from Lund University establishes that dogs catch yawns from humans. But not if the dogs are too young. The study, published in Springer's ...

Research finds that lizards are fast learners

(Phys.org)—An Australian lizard, the Eastern Water Skink, has dispelled a long held myth that reptiles are slow learners. Researchers studying the lizard have found they do have the ability for rapid and flexible learning, ...

Why clever crow is no bird brain

Biologists on Tuesday said they had figured out how the New Caledonian crow, a bird famed for using tools, does its party trick.

Home-based assessment tool for dementia screening

(Phys.org)—With baby boomers approaching the age of 65 and new cases of Alzheimer's disease expected to increase by 50 percent by the year 2030, Georgia Tech researchers have created a tool that allows adults to screen ...

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