Researchers produce all RNA nucleobases in simulated primordial Earth conditions
(Phys.org)—In 1952, chemists Stanley Miller and Harold Urey conducted a famous experimental simulation of the conditions thought to prevail on early Earth in order to determine possible pathways to the creation of life. The Miller-Urey experiment used water (H2O), methane (CH4), ammonia (NH3) and hydrogen (H2) sealed inside a glass flask. They introduced water vapor from a separate flask while firing electrical sparks between electrodes to simulate lightning. The chemists maintained this…
This Mummy's DNA Might Help Us Finally Figure Out Where Smallpox Came From
An international team of researchers might be on the cusp of understanding where smallpox originated, after finding one of the earliest known samples of it in the DNA of a mummified child who lived in the 17th century.