An ancient Aztec system of arithmetic, including symbols of hearts, hands, and arrows, has been deciphered, revealing a painfully meticulous tax code perhaps familiar to many today.

The first dig in the inner circle in 44 years aims to find a specific date for Stonehenge's founding.

See the earliest known gold necklace created in the Western Hemisphere—found in a burial site near Lake Titicaca in Peru.

Changes in climate may have first shrunk the woolly mammoth's habitat, but humans delivered the final blow to the species, a new study shows.

Tubular organisms that lived about 565 million years ago were found in positions that indicate they may have been the first animals to engage in sexual reproduction, researchers suggest.

Scientists have unearthed a pristinely preserved statue of Queen Tiye—the favorite wife of pharaoh Amenhotep III—in ancient Egypt's largest funerary complex.

A nine-bead necklace discovered in Peru is the oldest known gold artifact in the Americas, according to archaeologists.

A 12-foot-tall (3.6-meter-tall) colossus of Queen Tiye—the influential main wife of noted pharaoh Amenhotep III—has been unearthed at a sprawling temple complex in Luxor.

The tuatara may look the same as it did millions of years ago, but its DNA is rapidly changing, experts say.

A temple thought to have once housed idols and mummies has been unearthed near an ancient Inca site in Cusco, Peru, scientists say.

The largest species of giant elephant shrew has been discovered in Tanzania, and it may actually have an ancient connection to elephants.

A suspicious package in the bus's cargo hold turned out to contain a massive lower jawbone that likely belonged to an elephant-like animal.

The ten-foot-long (three-meter-long) reptile likely came to dominate the seas as larger marine animals went extinct 62 million years ago, scientists announced.

The new genus of dinosaur-era, carnivorous reptile, found deep in a Canadian mine, is also one of the most complete fossils of its kind ever unearthed.

A 1.2-million-year-old jawbone uncovered in northern Spain show that humans reached Western Europe far earlier than previously thought, scientists say.