Small enough to stand on the head of a match. A juvenile of Brookesia micra, one of the smallest reptiles in the world. Photo by Jörn Köhler
Like an alien: A portrait of an adult specimen of one of the newly discovered mini chamaleons, Brookesia desperata. Photo by Frank Glaw
All of the newly discovered chameleons appear to be restricted to very small distribution ranges, sometimes limited to a few square kilometers. "For this reason they might be especially sensitive to habitat destruction" says Jörn Köhler of the Hessisches Landesmuseum Darmstadt. "One of the new species, Brookesia desperata, is known only from a small rainforest remnant, and although this area is officially protected, it has suffered severe habitat degradation". The future survival of Brookesia tristis is uncertain as well. In the time since its habitat was designated a nature reserve, illegal logging has increased significantly - probably at least partially due to the current political crisis in Madagascar. The species names of these two chameleons (desperata = desperate, tristis = sad) were consciously chosen to call attention to their uncertain futures.
"The tiny new chameleons show remarkable genetic divergences between species, although superficially they closely resemble each other. This indicates that they separated from each other millions of years ago - even earlier than many other chameleon species,” says Miguel Vences from the Technical University of Braunschweig. "The genus Brookesia is the most basal group within chameleons", adds Ted Townsend of San Diego State University, who carried out the genetic studies. "This suggests that chameleons might have evolved in Madagascar from small and inconspicuous ancestors, quite unlike the larger and more colourful chameleons most familiar to us today.”
Yvonne Mielatz | idw
Making fuel out of thick air
08.12.2017 | DOE/Argonne National Laboratory
‘Spying’ on the hidden geometry of complex networks through machine intelligence
08.12.2017 | Technische Universität Dresden
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications
Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...
Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.
The most basic of all physical interactions in nature is that between light and matter. This interaction takes place in attosecond times (i.e. billionths of a...
Transistors based on carbon nanostructures: what sounds like a futuristic dream could be reality in just a few years' time. An international research team working with Empa has now succeeded in producing nanotransistors from graphene ribbons that are only a few atoms wide, as reported in the current issue of the trade journal "Nature Communications."
Graphene ribbons that are only a few atoms wide, so-called graphene nanoribbons, have special electrical properties that make them promising candidates for the...
08.12.2017 | Event News
07.12.2017 | Event News
05.12.2017 | Event News
08.12.2017 | Life Sciences
08.12.2017 | Information Technology
08.12.2017 | Information Technology