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Why Female Deer Like A Stag To Be A Big Noise In The Forest:

Impressive antlers may be the most eye-catching attribute of the male red deer, but it's the quality of a stag's mating call that attracts the female of the species, a new study from the University of Sussex has discovered.

Surprising Origin Of Cell's Internal Highways:

Scientists have long thought that microtubules, part of the microscopic scaffolding that the cell uses to move things around in order to hold its shape and divide, originated from a tiny structure near the nucleus, called the centrosome. Now, researchers at Vanderbilt University Medical Center reveal a surprising new origin for these cellular "highways." In the June issue of Developmental Cell, Irina Kaverina, Ph.D., and colleagues report that the Golgi apparatus -- a stack of pancake-shaped compartments that sorts and ships proteins out to their cellular destinations -- is the source of a particular subset of these microscopic fibers. The findings point to a novel cellular mechanism that may guide cell movement and possibly cancer cell invasion.

Another Sexual Attraction Is Possible:

The coming summer vibrates with expressions of insect love and desire. The cicada's songs or the butterflies' bright colours are examples of how an emitting sex attracts conspecific members of the responding sex. Moth odours (pheromones), though less conspicuous for us humans, are also signals by which females guide males towards them, even on the darkest nights. Such mating recognition systems tend to be very specific, hence they are thought to play a major role in the evolution of mating barriers and in the formation of new species.

Plant Life On Extrasolar Earthlike Planets Could Be Black:

When we think of extrasolar Earth-like planets, the first tendency is to imagine weird creatures like Jar Jar Binks, Chewbacca, and, if those are not bizarre enough, maybe even the pointy-eared Vulcan, Spock, of Star Trek fame. But scientists seeking clues to life on extrasolar planets are studying various biosignatures found in the light spectrum leaking out to Earth to speculate on something more basic and essential than the musical expertise of Droopy McCool. They are speculating on what kind of photosynthesis might occur on such planets and what the extrasolar plants might look like.

What Gives Freezing Its Sting?:

Freeing knotted shoelaces with fingers that are frozen stiff is extremely difficult and can even be painful. The reason that sensitivity and dexterity are poor is that both nerves and muscles perform their tasks reluctantly when they are cold. Nevertheless ice-cold fingers ache and do so all the more in response to the lightest of knocks or squeezing.