Helium-3 is one of the rarest and most valuable isotopes on Earth, with reported prices of up to US$18.7 million per kilogram, more than 100,000 times the price of common helium (helium-4). Against ...

University of California, Berkeley, physicists can now tune in to and hear normally inaudible quantum vibrations, called quantum whistles, enabling them to build very sensitive detectors of rotation ...

The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth could settle a long-standing debate over how our planet formed. When you purchase through ...