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What made the modern human brain so different from that of our extinct relatives, such as Neanderthals? Researchers at the University of California San Diego School of Medicine, along with an international team, have discovered that ancient hominids, including early humans and great apes, came into contact with lead far earlier than previously believed —…

A group of scientists, including researchers from the University of Tokyo, has found evidence that liquid water once moved through the asteroid that eventually gave rise to the near-Earth asteroid Ryugu. Remarkably, this activity took place more than a billion years after the asteroid first formed. The discovery, which relies on microscopic rock samples collected…

When it comes to teeth, most vertebrates share the same basic blueprint. Regardless of their size, shape, or sharpness, teeth typically have the same genetic roots, similar physical makeup, and, almost always, a place in the jaw. That assumption, however, may no longer hold true. Scientists studying the spotted ratfish, a shark-like species found in…

“These glasses are unique to Australia and have recorded an ancient impact event we did not even know about,” Professor Jourdan said. in a crater but in tiny glass fragments found only in Australia. The discovery focuses on rare natural glass called tektites, which form when a meteorite hits Earth with enough force to melt…

Australia’s tropical rainforests have become the first in the world to release more carbon than they absorb, in a trend linked to climate change, a study has found. Rainforests are usually regarded as so-called “carbon sinks” as they absorb more emissions than they emit with new trees offsetting the carbon released by dead ones. But…