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The toxin that causes botulism is the most potent that we know of - just 1/1,000th the weight of a grain of salt can be fatal, which is why so much effort has been put into keeping Clostridium botulinum, which produces the toxin, out of our food.

The evolution of the complex, weight-bearing hips of walking animals from the basic hips of fish was a much simpler process than previously thought, according to a new paper.

Tetrapods, four-legged animals, first came to land about 395 million years ago - a significant step, literally and figuratively, and it was made possible by strong hipbones and a connection through the spine via an ilium, features that were not present in the fish ancestors of tetrapods. 

The drug candidate J147 was able to reverse memory deficits and improve several aspects of brain function in mice with advanced symptoms of Alzheimer's disease, according to a new study.  

Unique cellular and molecular mechanisms behind tooth renewal in American alligators may help science learn how to stimulate tooth regeneration in people, according to a new study.

We regenerate teeth now. We grow baby teeth and then we replace those with adult teeth.  Yet most vertebrates can replace teeth throughout their lives and we cannot, despite the lingering presence of dental lamina, a band of epithelial tissue crucial to tooth development. Because alligators have well-organized teeth with similar form and structure as mammalian teeth and are capable of lifelong tooth renewal, the authors reasoned that they might serve as models for mammalian tooth replacement. 

Detecting alien worlds is a significant challenge since they are small, faint, and close to their stars. The two most prolific techniques for finding exoplanets are radial velocity (looking for wobbling stars) and transits (looking for dimming stars). 

A team at Tel Aviv University and the Harvard-Smithsonian Center for Astrophysics (CfA) has just discovered an exoplanet and the planet they found, Kepler-76b, was identified by the BEER algorithm; an acronym for relativistic BEaming, Ellipsoidal, and Reflection/emission modulations. BEER was developed by Professor Tsevi Mazeh and his student, Simchon Faigler, at Tel Aviv University in Israel and is a new method that relies on Einstein's special theory of relativity.

We all know that the Earth is in constant motion, rotating beneath our feet, but new research in Nature Geoscience reveals that the center of the Earth is out of sync with the rest of the planet and is frequently speeding up and slowing down.

Associate Professor Hrvoje Tkalcic from the ANU College of Physical and Mathematical Sciences and his team used earthquake doublets to measure the rotation speed of Earth’s inner core over the last 50 years and discovered that not only did the inner core rotate at a different rate to the mantle – the layer between the core and the crust that makes up most of the planet’s interior – but its rotation speed was variable.