A 520-million-year-old, three-inch fossil has yielded evidence that complex brains evolved much earlier than previously thought. The preserved external skeleton of Fuxianhuia protensa, an extinct type of arthropod, is the earliest known fossil to show a complex brain, according to a study published in the journal Nature. “No one expected such an advanced brain would…
A New York Medical College developmental biologist whose life’s work has supported the theory of evolution has developed a concept that dramatically alters one of its basic assumptions—that survival is based on a change’s functional advantage if it is to persist. Stuart A. Newman, Ph.D., professor of cell biology and anatomy, offers an alternative model…
A meteorite that fell in Morocco last year might contain the freshest evidence for water on Mars, according to a study published in Science. The meteorite, named Tissint after the town nearest its landing site, was identified as a Mars rock in January. Now, Hasnaa Chennaoui Aoudjehane and her colleagues report that Tissint contains evidence…
Orbiting a star that is visible to the naked eye, astronomers have discovered a planet twice the size of our own made largely out of diamond. The rocky planet, called ’55 Cancri e’, orbits a sun-like star in the constellation of Cancer and is moving so fast that a year there lasts a mere 18…
The 100 Year Spaceship Symposium, an international event advocating human expansion into other star systems, has some crucial hurdles to overcome. Basically, interstellar travel will depend upon extremely precise measurements of every factor involved in the mission, which isn’t possible yet. But a University of Missouri researcher thinks he has found the solution to a…
ESA’s Herschel space observatory has discovered enough water vapor to fill Earth’s oceans more than 2000 times over, in a gas and dust cloud that is on the verge of collapsing into a new Sun-like star. Stars form within cold, dark clouds of gas and dust – ‘pre-stellar cores’ – that contain all the ingredients…
The living slime that may have been the muse for the 1958 science-fiction film The Blob just got creepier: Evidence has emerged that slime mold, a brainless single-celled organism, has a form of memory. In experiments with the slime mold Physarum polycephalum, scientists at the University of Sydney noticed that the life-form avoided retracing its…
Researchers have found what they say is the only fossil ever discovered of a spider attack on prey caught in its web – a 100 million-year-old snapshot of an engagement frozen in time. The extraordinarily rare fossils are in a piece of amber that preserved this event in remarkable detail, an action that took place…
Scientists at the University of Cambridge have used cutting-edge infrared surveys of the sky to discover a new population of enormous, rapidly growing supermassive black holes in the early Universe. The black holes were previously undetected because they sit cocooned within thick layers of dust. The new study, published in the journal Monthly Notices of…
NASA’s Swift satellite recently detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galaxy. The outburst, produced by a rare X-ray nova, announced the presence of a previously unknown stellar-mass black hole. “Bright X-ray novae are so rare that they’re essentially once-a-mission events and this is the…