It's rare to find gladiator memorabilia from Roman Britain, but archaeologists by Hadrian's Wall have just found a 2,000-year-old knife handle depicting a left-handed fighter.
A new species of tardigrades with thousands of genes that become more active when exposed to radiation could help in devising better protection for astronauts on long missions.
Archaeologists discovered a 2,000-year-old rock quarry in Jerusalem which may have provided the massive stone building blocks used in the Second Temple.