Ribonucleic acid: carrier of genetic information and regulator of gene expression
A cluster of recent marine sightings shows orcas and dolphins appearing more frequently off the Northumberland coast, while Norfolk Island’s reefs show stress from runoff, dredging plans and El Niño. Scientists warn warming waters threaten coral ecosystems and coastal wildlife.
Researchers have detected erythrulose, a four-carbon sugar, in the interstellar medium near the Milky Way’s center. The finding supports theories that sugars essential to life could form in space and arrive on Earth via comets and asteroids. The study, published in Nature Astronomy, suggests that millions of tonnes of erythrulose may have rained down on Earth during the Late Heavy Bombardment.