Curated category
Occupational safety and health
- PigArchaeological evidence places the first domestication of pigs in the Near East around the Tigris Basin more than 11,400 years ago.
- NursingIn the fifth century BC, the Hippocratic Collection described skilled care provided by male attendants who observed patients with a focus on anatomy and…
- Oil refineryAs early as the first century, Chinese civilizations were refining crude oil for use as an energy source. Between 512 and 518, during the late Northern Wei…
- CarcinogenA carcinogen is any agent that promotes the development of cancer. These agents include synthetic chemicals, naturally occurring substances, physical forces…
- FirefightingIn 60 A.D., emperor Nero established a Corps of Vigils to protect Rome after a disastrous fire. This group consisted of 7,000 people equipped with buckets…
- Mercury (element)A heavy, silvery-white metal flows freely at room temperature. Mercury remains liquid until the temperature drops to minus 38.83 degrees Celsius.
- COVID-19 pandemicIn late December 2019, a cluster of pneumonia cases appeared in Wuhan, China. Chinese pulmonologist Zhang Jixian observed the unusual group on the 26th of…
- MiningPaleolithic humans stood at the Ngwenya Mine in Eswatini about 43,000 years ago. They mined hematite to create red pigment known as ochre for their bodies…