Evidence from cyclostomes for complex regionalization of the ancestral vertebrate brain
The vertebrate brain is highly complex, but its evolutionary origin remains elusive. Because of the absence of certain developmental domains generally marked by the expression of regulatory genes, the embryonic brain of the lamprey, a jawless vertebrate, had been regarded as representing a less complex, ancestral state of the vertebrate brain. Specifically, the absence of a Hedgehog- and Nkx2.1-positive domain in the lamprey subpallium...
Evidence for a new phase of dense hydrogen above 325 gigapascals
Almost 80 years ago it was predicted that, under sufficient compression, the H–H bond in molecular hydrogen (H2) would break, forming a new, atomic, metallic, solid state of hydrogen. Reaching this predicted state experimentally has been one of the principal goals in high-pressure research for the past 30 years. Here, using in situ high-pressure Raman spectroscopy, we present evidence that at pressures greater than...
Evidence for a new phase of dense hydrogen above 325 gigapascals
Almost 80 years ago it was predicted that, under sufficient compression, the H–H bond in molecular hydrogen (H2) would break, forming a new, atomic, metallic, solid state of hydrogen. Reaching this predicted state experimentally has been one of the principal goals in high-pressure research for the past 30 years. Here, using in situ high-pressure Raman spectroscopy, we present evidence that at pressures greater than...
Holometer finds no evidence we’re living in a Matrix-like hologram … so far
Is our universe a two-dimensional hologram? It sounds like science fiction straight from “The Matrix,” but scientists are checking out the hypothesis for real. So far, the answer is no. The experiments are being conducted at Fermilab in Illinois, using a gnarly-looking device known as the Holometer. The apparatus is designed to measure the smoothness of spacetime at...
Radar scans add to evidence of hidden chambers in King Tut’s tomb, hinting at ‘enormous’ discovery
Radar scans have turned up fresh evidence of hidden chambers beyond the walls of King Tutankhamun’s burial chamber in Egypt’s Valley of the Kings, Egypt’s Ministry of Antiquities reported today. The scans were supervised by Japanese radar specialist Hirokatsu Watanabe on Thursday and Friday. They add to the evidence from thermal infrared imaging and a close examination of...