These are either behavioral or structural differences between species that make mating impossible: Temporal or habitat isolation occurs when related but distinct species of organisms mate at ...

Their 1,700-square-foot (160-square-meter) home included crew quarters, common areas and even an area for crops like tomatoes and peppers. Called "Mars Dune Alpha" the 3D-printed habitat was ...

A rare predator's population numbers are declining. Increasingly frequent and severe wildfires are the biggest reason why.