Science Bulletins

tags: Zircons: Time Capsules from the Early Earth, science bulletins, geology, AMNH, American Museum of Natural History, hadean eon, zircon, rocks, age of the earth, history of planet earth, streaming video Zircons are tiny crystals with a big story to tell. Some of these minerals are the oldest Earth materials ever discovered, and therefore yield clues about what the planet was like after it formed 4.5 billion years ago. In this new Science Bulletins video, travel to a remote island off Greenland's coast and a zircon-making lab in New York State to learn how geologists are using these time…
tags: Alex Filippenko, Josh Frieman, FermiLab, astronomy, astrophysics, Science Bulletins, research, American Museum of Natural History, AMNH, New York City, space, nature, universe, The Expanding Universe, streaming video In 1998, astrophysicists discovered a baffling phenomenon: the Universe is expanding at an ever-faster rate. Either an enigmatic force called dark energy is to blame or a reworking of gravitational theory is in order. In this new Science Bulletins video, watch a FermiLab team assemble the Dark Energy Camera, a device that could finally solve this space-stretching mystery…