To learn more about life’s origins, scientists investigated some of the oldest remnants of crust on Earth—rocks 3.7 billion to 3.8 billion years old from Isua on the southwestern coast of Greenland.
New fossils recast a flat-faced oddity as a star species in the first chapter of the human story—perhaps even as our oldest known truly human ancestor. At the least, the fossils confirm that at least three different human species inhabited the same Kenyan neighborhood at the dawn of humanity, according to a new study led…
A new analysis of complex interactions between humans and the environment preceding the 9th century collapse and abandonment of the Central Maya Lowlands in the Yucatán Peninsula points to a series of events — some natural, like climate change; some human-made, including large-scale landscape alterations and shifts in trade routes — that have lessons for…
Researchers have succeeded in mimicking the chemistry of life in synthetic versions of DNA and RNA molecules. The work shows that DNA and its chemical cousin RNA are not unique in their ability to encode information and to pass it on through heredity. The work, reported in Science, is promising for future “synthetic biology” and…
Egypt’s Antiquities Minister says Italian archaeologists have unearthed tombs over 3000 years old in the ancient city of Luxor. Mohammed Ibrahim says the discovery was made beneath the mortuary temple of King Amenhotep II, seventh Pharaoh of the 18th dynasty who reigned from 1427 to 1401 B.C. The temple is located on the western bank…
Chimps may be similar to us in many ways but they can’t compete when it comes to brain size. Now for the first time we can see when the differences emerge by tracking the brain development of unborn chimps. Researchers in Japan subjected a pregnant chimp to a 3D ultrasound to gather images of the…
A Kansas State University-led quantum mechanics study has discovered a new bound state in atoms that may help scientists better understand matter and its composition. The yet-unnamed bound state, which the physicists simply refer to as “our state” in their study, applies to three identical atoms loosely bound together — a behavior called three-body bound…