Cracking the Scent of Cleopatra's Perfume

Scientists are using new biomolecular approaches to decode past scents with greater accuracy, including recreating Cleopatra's perfume. Tiny glass beads on the moon's surface could contain trillions of pounds of water, according to a study of lunar soil samples. Israeli scientists have discovered that plants emit a popping or clicking sound that is not detectable by the human ear, which could convey useful information to other animals. Researchers have found that Old Masters used proteins, especially egg yolk, in their paint, which might help conservators better preserve old artworks. Human noise pollution disrupts wildlife, causing elevated stress levels in a lizard species near a US Army base in Colorado Springs.