Researchers identify key pathway for plant cell growth
For plants, the only way to grow is for cells to expand. Unlike animals, cell division in plants happens only within a tiny region of the root and stem apex, making cell expansion the critical path to increased ...
Flies with brothers make gentler lovers
Flies living with their brothers cause less harm to females during courting than those living with unrelated flies, say Oxford University scientists.
Engineers convert yeast cells into 'sweet crude' biofuel
(Phys.org) —Researchers at The University of Texas at Austin's Cockrell School of Engineering have developed a new source of renewable energy, a biofuel, from genetically engineered yeast cells and ordinary ...
Calcium absorption not the cause of evolution of milk digestion in Europeans
Ancient DNA from early Iberian farmers shows that the wideheld evolutionary hypothesis of calcium absorption was not the only reason Europeans evolved milk tolerance.
Actin cytonauts at play in the cell
Dispersal patterns key to invasive species' success
In 1859 an Australian farmer named Thomas Austin released 24 grey rabbits from Europe into the wild because it "could do little harm and might provide a touch of home, in addition to a spot of hunting."
Fighting flies: Biologists identify sex-specific brain cells in male flies that promote aggression
(Phys.org) —When one encounters a group of fruit flies invading their kitchen, it probably appears as if the whole group is vying for a sweet treat. But a closer look would likely reveal the male flies ...
Renewable chemical ready for biofuels scale-up
Using a plant-derived chemical, University of Wisconsin-Madison researchers have developed a process for creating a concentrated stream of sugars that's ripe with possibility for biofuels.
Birds fly in 'V' formation to save energy, study finds (Update)
The next time you see birds flying in a V, consider this: A new study says they choreograph the flapping of their wings with exquisite precision to help them on their way.
Social experience drives empathetic, pro-social behavior in rats
Empathy-driven behavior has been observed in rats who will free trapped companions from restrainers. This behavior also extends toward strangers, but requires prior, positive social interactions with the ...
Microbes buy low and sell high
The idea that people make calculated decisions that allow them to obtain the most goods with the smallest amount of effort—a complex hypothesis called 'economic man' for short—often has been challenged. ...
Tiktaalik roseae fossil analysis provides new details on the origin of vertebrate legs
The discovery of well-preserved pelves and a partial pelvic fin from Tiktaalik roseae, a 375 million-year-old transitional species between fish and the first legged animals, reveals that the evolution of hin ...
Researchers capture video of freshwater fish grabbing birds out of the air
Study dispels theories of Y chromosome's demise
A comparison of Y chromosomes in eight African and eight European men dispels the common notion that the Y's genes are mostly unimportant and that the chromosome is destined to dwindle and disappear.