Earth's oldest known impact crater found in Greenland
A 62 mile-wide crater has been found in Greenland, the result of a massive asteroid or comet impact a billion years before any other known collision on Earth.
Dramatic Change Spotted on a Faraway Planet
Astronomer Alain Lecavelier des Etangs (CNRS-UPMC, France) and his team used Hubble to observe the atmosphere of exoplanet HD 189733b during two periods in early 2010 and late 2011, as it was silhouetted against its parent star.
Dinosaurs Were Warm-Blooded Reptiles
The journal Nature has published a study analysing the lines of arrested growth (LAG) in the bones of around a hundred ruminants, representative of the specific and ecological diversity of that group of mammals.
Ancient Human Ancestors Had Unique Diet, According to Study Involving CU Boulder
Australopithecus sediba targeted trees, bushes and fruits