The effects of a supernova -- and possibly more than one -- on large ocean life like school-bus-sized Megalodon 2.6 million years ago are detailed in a paper just published in Astrobiology.
Researchers have genetically transformed the Common Primrose (Primula vulgaris) for the first time in a development that could shed light on one of the plant world's most renowned reproductive systems.
A new Northwestern University study has found that an antimicrobial chemical called triclosan is abundant in dust -- and linked to changes in its genetic makeup. The result is dust with organisms that could cause an antibiotic-resistant infection.
Min Dong, PhD, and his lab are world experts in toxins. Now, setting their sights on Shiga toxin (player in the current E. coli outbreak from romaine lettuce) and ricin (a bioterrorism agent), they identify potential protective strategies. Their study also sheds new light on glycosylation, the attachment of sugars to large molecules, key to cells' ability to create more diverse molecules beyond what's encoded in the genome.
Scientists at the University of Edinburgh have discovered eight additional genes linked to red hair, helping to solve a mystery of how redheads inherit their flaming locks.
Iridescence is responsible for some of the most striking visual displays in the animal kingdom. Now, thanks to a new study of feathers from almost 100 modern bird species, scientists have gained new insights into how this colour diversity evolved.
Animals are much better at smelling a complex 'soup' of odorants rather than a single pure ingredient, a new study by the University of Sussex has revealed.
Barely living 'zombie' bacteria and other forms of life constitute an immense amount of carbon deep within Earth's subsurface -- 245 to 385 times greater than the carbon mass of all humans on the surface, according to Deep Carbon Observatory scientists nearing the end of a 10-year international collaboration to reveal Earth's innermost secrets.
A Queensland University of Technology-led collaboration with University of Adelaide reveals that Australia's pint-sized banded hare-wallaby is the closest living relative of the giant short-faced kangaroos which roamed the continent for millions of years, but died out about 40,000 years ago.
A genome analysis of traits in parrots and 26 other bird species revealed that parrots and other long-lived birds share high rates of conserved mutations in genes responsible for supporting an abnormally long lifespan for a small animal. For example, the expected lifespan for a bird of a similar size as a parrot would be in the range of 15-20 years, whereas the blue-fronted Amazon parrot can live up to 66 years.