Black hole found hiding in star cluster outside our galaxy
Using the European Southern Observatory’s Very Large Telescope (ESO’s VLT), astronomers have discovered a small black hole outside the Milky Way by looking at how it influences the motion of a star in its close vicinity. This is the first time this detection method has been used to reveal the presence of a black hole […]
Opinion | Should Surgeons Have a Mandatory Retirement Age?
On July 1, 1928, William J. Mayo, MD, a very highly regarded surgeon and co-founder, along with his brother, Charles, of the fabled Mayo Clinic, operated on a patient like he had done on many occasions in his career. Afterward, he returned to his office and announced to his secretary that he had performed his […]
Novel quantum effect discovered in naturally occurring graphene: International research team finds atomically-thin carbon generates its own magnetic field
Usually, the electrical resistance of a material depends very much on its physical dimensions and fundamental properties. Under special circumstances, however, this resistance can adopt a fixed value that is independent of the basic material properties and “quantised” (meaning that it changes in discrete steps rather than continuously). This quantisation of electrical resistance normally occurs […]
Tyrannosaurus rex’s jaw had sensors to make it an even more fearsome predator
Tyrannosaurus rex was not just a huge beast with a big bite, it had nerve sensors in the very tips of its jaw enabling it to better detect — and eat — its prey, a new study published in the peer-reviewed journal Historical Biology today finds. “T. rex was an even more fearsome predator than […]
Same dance, different species: How natural selection drives common behavior of lizards: A surprising study on the behavior of unrelated lizards demonstrates how evolution can lead to different species learning the same skills
A surprising study by UNSW on the behaviour of unrelated lizards in very different parts of the world has demonstrated how evolution can lead to different species learning the same skills. The study in Ecology Letters documents how the Anolis lizard species in the Caribbean, and the Draco lizard species in Southeast Asia, have solved […]