The wide-set eyes and exaggeratingly long teeth likely helped Thylacosmilus atrox become a successful hunter.
Scientists have found uracil, one of the key building blocks for RNA, on the 200 million-mile-distant asteroid Ryugu
The prehistoric monument Stonehenge was built up to 5,000 years ago on Salisbury Plain in England, but its ultimate purpose remains a tantalizing mystery.
What had multiple eyes and a hard shell? A trilobite, that's what.