Hector Garrido Most geodes—hollow, crystal-lined rocks—can suit the palm of your hand. However the huge Pulpí Geode, which has to do with half the size of a small bedroom,... Read more »
MAURICIO ANTON When paleontologists collected the bones of Africa’s largest carnivore in the early 1980s, they had no concept what they had discovered. Many other fossils cluttered the dig... Read more »
The photonic switch is constructed with more than 50,000 microscopic “light switches” engraved into a silicon wafer. Each light switch (little raised squares) directs one of 240 small beams... Read more »