Biology

CT scan images caterpillar to butterfly metamorphosis in 3-D

Serving as one of the strongest metaphors nature has to offer, at the later stages of its evolution the caterpillar – a soft bodied, not very pretty, ground based insect – morphs into a butterfly – a majestic flying insect of varying coloring and shape. What exactly goes inside the chrysalis the caterpillar wraps itself with for the many [...]

Women may live longer than men due to stronger immune system

The life expectancy gap between men and women is a rather attested fact, and while in the past a laborious, physically tense lifestyle for men was used to serve as an explanation, in our day and age of gender equality this doesn’t quite cut it anymore. Researchers in Japan might have stumbled across a clue [...]

Carnivorous plant disposes of “Junk” DNA, hinting it may not be necessary

Only 2% of the human genome is comprised of genes, while the vast majority of genetic material is known as noncoding DNA – that is to say DNA that doesn’t code proteins. A complex plant, the carnivorous bladderwort plant, known as Utricularia gibba, recently became the center of attention for evolutionary biologists after a recently published paper by [...]

“Living fossil” fish DNA may help explain how the first animals to walk on land evolved

A matter of great debate and ardent discussion in the field of evolutionary biology today is the transition of complex life from a watery environment to land. So far, there have been numerous speculations put forward in attempt to explain how tetrapods (four-legged land animals) first evolved and washed ashore to start life fresh as [...]

Primate howl hints towards origins of human speech

Scientists have always tried to answer how speech developed in humans or what are its evolutionary mechanisms, a mystery made even more difficult to unravel since none of our close primate relatives has been granted with even the most primitive forms of speech, or so it was thought. Researchers studying the gelada – a primate [...]

How cells and cell fragments move in opposite directions in response to electric field

Researchers at  University of California, Davis have shown for the first time how whole cells and fragments orient and move in response to electrical stimuli like an electric field. Surprisingly enough, their results show that whole and fragments move in opposite directions, despite being governed by the same electric field. The findings help better our understanding [...]

New tarantula species discovered in Sri Lanka is huge

A Sri Lanka researcher has discovered a new tarantula species, and it’s literally a big deal. Spanning across eight inches, this tarantula is big enough to cover your entire face and boasts a unique coloring. Ranil Nanayakkara, a local researcher, along with his team found the tiger stripped arachnid while on a typical arachnid expedition [...]

Ants follow Fermat’s principle of least time

If you know your physics (or optics, to be more specific), you’ve probably heard a lot about Fermat’s principle (or the principle of least time). Basically, what it states is that the path taken between two points by a ray of light is the path that can be traversed in the least time. A ray [...]

Namibian fairy circles mystery finally solved: they’re made by termites

A while ago, we wrote about the ongoing efforts to pinpoint the cause that gives rise to the thousands of so called “fairy circles” scattered around hundreds of square miles from the edge of the Namib Desert in Angola to South Africa. These great rings of grass that cover whole patches of arid desert have [...]

Bacteria conducts electricity just like a metal through bio-nanowires

A team of researchers from the US claim they have finally found tangible evidence that will once and for all end the controversy surrounding the Geobacter sulfurreducens, a bacteria that conducts electricity along thin protein filaments, just like a metal. In the scientists’ paper, it’s reported that aromatic amino-acids are central  to both the electrical and respiratory functions [...]

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