Why do plant roots grow down and not up?

(PhysOrg.com) -- It is essential for roots to grow down so they can explore the soil and maximise their water uptake. But how they know that is a question that has fascinated scientists since Darwin. Now scientists led by ...

Japan bio-scientists produce 'singing mouse'

Japanese scientists said Tuesday they had produced a mouse that tweets like a bird in a genetically engineered "evolution" which they hope will shed light on the origins of human language.

New thread in fabric of insect silks

(PhysOrg.com) -- The aptly named silk worms long appeared to have the monopoly on insect silk production, but now scientists are revealing that the world of insect silks is highly complex.

New type of extra-chromosomal DNA discovered

(PhysOrg.com) -- A team of scientists from the University of Virginia and University of North Carolina in the US have discovered a previously unidentified type of small circular DNA molecule occurring outside the chromosomes ...

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