(Phys.org)—Despite evidence that phenotypic change does not always occur uniformly across all species members and lineages, single size or shape traits are often used to represent species-level change in ...

Biology - Evolution

Dec 14, 2012 5 / 5 (4) 4 |

NASA's revolutionary Curiosity rover is celebrating 90 Sols on Mars by snapping amazing self-portraits (see our mosaics above and below) and biting into the Red Planet's surface to accomplish unprecedented ...

Space & Earth - Space Exploration

Nov 08, 2012 4.5 / 5 (4) 1