Oldest-ever igneous meteorite contains clues to planet building blocks

Scientists believe the solar system was formed some 4.6 billion years ago when a cloud of gas and dust collapsed under gravity possibly triggered by a cataclysmic explosion from a nearby massive star or supernova. As this cloud collapsed, it formed a spinning disk with the sun in the center. Since then scientists have been able to establish the formation of the solar system piece by piece.
Source: Science Daily

Oldest evidence of horse veterinary care discovered in Mongolia

A team of scholars analyzed horse remains from an ancient Mongolian pastoral culture. Examination of skeletal remains from the impressive horse burials associated with the Deer Stone-Khirigsuur Culture showed that surgical procedures were used to remove baby teeth that would have caused young horses pain or difficulty with feeding — the world’s oldest known evidence for veterinary dental care.
Source: Science Daily